# \#sublevel **URL:** https://forums.unrealengine.com/tag/sublevel/1915.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Is there a way to have a streaming sublevel that does not load in editor by default in a non world partitioned level?](https://forums.unrealengine.com/t/is-there-a-way-to-have-a-streaming-sublevel-that-does-not-load-in-editor-by-default-in-a-non-world-partitioned-level/2833949)
**Author:** [@ubi\_herbertyanes](https://forums.unrealengine.com/u/ubi_herbertyanes)\ **Replies:** 0\ **Last updated:** [September 24, 2026, 1:51pm UTC](https://forums.unrealengine.com/t/is-there-a-way-to-have-a-streaming-sublevel-that-does-not-load-in-editor-by-default-in-a-non-world-partitioned-level/2833949 "2026-09-24T13:51:03Z")
We have a sub-level that holds all the static mesh actors that are used for terrain baking. We would like to have this level not load in editor unless the artist manually request it to save on loading time for people tha… --- ## [Transferring Actors from Sub-Level to Persistent Level](https://forums.unrealengine.com/t/transferring-actors-from-sub-level-to-persistent-level/422893)
**Author:** [@domridley\_affari](https://forums.unrealengine.com/u/domridley_affari)\ **Replies:** 4\ **Last updated:** [July 14, 2025, 2:59am UTC](https://forums.unrealengine.com/t/transferring-actors-from-sub-level-to-persistent-level/422893 "2025-07-14T02:59:07Z")
I’m looking for a method to move actors from my sub-level to my persistent level. Reason being is the assets that need to be on the persistent level are used for transitions from sub-level to sub-level that block the use… --- ## [Unreal creates duplicates (Actor) that I didn't create. | visible, sublevel, actors](https://forums.unrealengine.com/t/unreal-creates-duplicates-actor-that-i-didnt-create-visible-sublevel-actors/2539599)
**Author:** [@Nizami\_Nz](https://forums.unrealengine.com/u/Nizami_Nz)\ **Replies:** 1\ **Last updated:** [June 3, 2025, 8:44pm UTC](https://forums.unrealengine.com/t/unreal-creates-duplicates-actor-that-i-didnt-create-visible-sublevel-actors/2539599 "2025-06-03T20:44:09Z")
Unreal creates duplicates (Actor) that I didn’t create. This happens when I click the (Compile) button in any blueprint. This beginning started when I pressed (Ctrl+z) - (Ctrl+Y) However, these dubbed actors are not o… --- ## [Moving Sub-Level Location does not also move Baked Lighting with it.](https://forums.unrealengine.com/t/moving-sub-level-location-does-not-also-move-baked-lighting-with-it/417882)
**Author:** [@Shadow\_Knights](https://forums.unrealengine.com/u/Shadow_Knights)\ **Replies:** 14\ **Last updated:** [February 16, 2025, 7:49am UTC](https://forums.unrealengine.com/t/moving-sub-level-location-does-not-also-move-baked-lighting-with-it/417882 "2025-02-16T07:49:25Z")
Hello, I have what appears to be a bug with regards to Baked Lighting information not moving with Sub Levels in the Persistent Level. This causes each SubLevel to have incorrect lighting information on the terrain/room… --- ## [How to create instances of sublevel in multiplayer game?](https://forums.unrealengine.com/t/how-to-create-instances-of-sublevel-in-multiplayer-game/448377)
**Author:** [@anonymous\_user\_1ad8474a](https://forums.unrealengine.com/u/anonymous_user_1ad8474a)\ **Replies:** 3\ **Last updated:** [March 6, 2024, 4:24pm UTC](https://forums.unrealengine.com/t/how-to-create-instances-of-sublevel-in-multiplayer-game/448377 "2024-03-06T16:24:31Z")
Hi, i’m trying to generate map with rooms. I decided to store every room in sublevel, so i can bake light for each of them and then place them in persistent level. While generating i’m creating some copies of each sublev… --- ## ["LinkerRoot is null" when using external actors with sublevels (PIE)](https://forums.unrealengine.com/t/linkerroot-is-null-when-using-external-actors-with-sublevels-pie/1589938)
**Author:** [@sirjofri](https://forums.unrealengine.com/u/sirjofri)\ **Replies:** 1\ **Last updated:** [January 9, 2024, 12:10pm UTC](https://forums.unrealengine.com/t/linkerroot-is-null-when-using-external-actors-with-sublevels-pie/1589938 "2024-01-09T12:10:09Z")
Good morning, our project uses Unreal 5.2 (originally upgraded from 4.26) and we’re using sublevels (no world partition) in combination with external actors. Recently, I recognized crashes in PIE that are related to loa… --- ## [Sub-Levels' BP Actors being randomly set to 0,0,0 location](https://forums.unrealengine.com/t/sub-levels-bp-actors-being-randomly-set-to-0-0-0-location/372058)
**Author:** [@anonymous\_user\_7f8ea531](https://forums.unrealengine.com/u/anonymous_user_7f8ea531)\ **Replies:** 10\ **Last updated:** [December 3, 2023, 9:43pm UTC](https://forums.unrealengine.com/t/sub-levels-bp-actors-being-randomly-set-to-0-0-0-location/372058 "2023-12-03T21:43:26Z")
Hi all, today i came across with an old 4.8 bug already reported here: .html My project is a BP only project in 4.11.2, no plugin installed I have a persistent level and a lot of sub-levels and of course i use manual … --- ## [I've tried it all. Still can't get nav mesh working in streamed sublevels.](https://forums.unrealengine.com/t/ive-tried-it-all-still-cant-get-nav-mesh-working-in-streamed-sublevels/1254685)
**Author:** [@mmmmGoodDinner](https://forums.unrealengine.com/u/mmmmGoodDinner)\ **Replies:** 5\ **Last updated:** [November 9, 2023, 7:10pm UTC](https://forums.unrealengine.com/t/ive-tried-it-all-still-cant-get-nav-mesh-working-in-streamed-sublevels/1254685 "2023-11-09T19:10:19Z")
I’ve read probably every forum post and reddit thread I could find on the subject, but I still cannot reliably get a static nav mesh working in streamed sublevels (I don’t want to use dynamic nav mesh as I’d like to save… --- ## [Is there a way to move actors from a sublevel without breaking references?](https://forums.unrealengine.com/t/is-there-a-way-to-move-actors-from-a-sublevel-without-breaking-references/441595)
**Author:** [@anonymous\_user\_62e0f51e](https://forums.unrealengine.com/u/anonymous_user_62e0f51e)\ **Replies:** 2\ **Last updated:** [August 29, 2023, 12:43pm UTC](https://forums.unrealengine.com/t/is-there-a-way-to-move-actors-from-a-sublevel-without-breaking-references/441595 "2023-08-29T12:43:32Z")
I have an actor that has an array of references to related actors and I would like to move them from a sublevel into the persistent level without losing the references. When I select them all and move using “Move selecti… --- ## [Volumetric Lightmap Sublevel Transform Fails](https://forums.unrealengine.com/t/volumetric-lightmap-sublevel-transform-fails/483399)
**Author:** [@Skunkmeister](https://forums.unrealengine.com/u/Skunkmeister)\ **Replies:** 2\ **Last updated:** [June 9, 2023, 6:56am UTC](https://forums.unrealengine.com/t/volumetric-lightmap-sublevel-transform-fails/483399 "2023-06-09T06:56:17Z")
My team and I are attempting to create a procedural dungeon system. To preserve that sweet sweet UE4 lighting, we want to spawn sublevels with their lighting baked in. At this time this seems largely impossible, because… --- ## [Spawn Actor in streamed-level](https://forums.unrealengine.com/t/spawn-actor-in-streamed-level/308713)
**Author:** [@Napoleonite](https://forums.unrealengine.com/u/Napoleonite)\ **Replies:** 8\ **Last updated:** [May 24, 2023, 9:52pm UTC](https://forums.unrealengine.com/t/spawn-actor-in-streamed-level/308713 "2023-05-24T21:52:57Z")
I dynamically spawn 3 spheres (actor-blueprints) on “event begin play”. However, I want each sphere to be spawned on a different stream-level. Because the real project has not 3 spheres but more like 300.000. So I need s… --- ## [RecastNavMesh disappeared in stream levels](https://forums.unrealengine.com/t/recastnavmesh-disappeared-in-stream-levels/446491)
**Author:** [@anonymous\_user\_19cdb1f4](https://forums.unrealengine.com/u/anonymous_user_19cdb1f4)\ **Replies:** 2\ **Last updated:** [January 30, 2023, 9:16am UTC](https://forums.unrealengine.com/t/recastnavmesh-disappeared-in-stream-levels/446491 "2023-01-30T09:16:54Z")
Hey everyone! I had this issue in UE4.20, and it might have been resolved in later engine versions, but I wanted to post this resolution just in case anyone is still using this version and had this issue. I didn’t see a… --- ## [Lighting Built Data from Sublebels cannot be saved, error](https://forums.unrealengine.com/t/lighting-built-data-from-sublebels-cannot-be-saved-error/381779)
**Author:** [@anonymous\_user\_b08d21cb](https://forums.unrealengine.com/u/anonymous_user_b08d21cb)\ **Replies:** 9\ **Last updated:** [June 27, 2022, 6:37am UTC](https://forums.unrealengine.com/t/lighting-built-data-from-sublebels-cannot-be-saved-error/381779 "2022-06-27T06:37:26Z")
Hello All, Set-up un UE 4.14.3 is: Persistent Sublevel 1 “Untitled\_1” When I build the lighting with Sublevel “Untitled\_1” active and the persistent level hidden the build runs through ok, but I can not save th… --- ## [Get current sublevel name?](https://forums.unrealengine.com/t/get-current-sublevel-name/468105)
**Author:** [@anonymous\_user\_1edfddd7](https://forums.unrealengine.com/u/anonymous_user_1edfddd7)\ **Replies:** 3\ **Last updated:** [November 26, 2021, 8:07am UTC](https://forums.unrealengine.com/t/get-current-sublevel-name/468105 "2021-11-26T08:07:27Z")
Hey all, There is a node called ‘get current level name’ which is very useful, but the project I’m working on requires knowing what sublevel the actor is currently in as well, is there a way to get the current sublevel … --- ## [BeginPlay is called every time a sub-map is made visible](https://forums.unrealengine.com/t/beginplay-is-called-every-time-a-sub-map-is-made-visible/402387)
**Author:** [@lordmatthoffman](https://forums.unrealengine.com/u/lordmatthoffman)\ **Replies:** 3\ **Last updated:** [August 23, 2021, 3:41pm UTC](https://forums.unrealengine.com/t/beginplay-is-called-every-time-a-sub-map-is-made-visible/402387 "2021-08-23T15:41:01Z")
Hi all, It appears that in 4.17.1 (and maybe earlier? Untested) that BeginPlay gets called on all actors in a ULevel every time it is made visible. I do not know if this happens using normal sub-levels or not, but when … --- ## [Accessed none when referencing player character](https://forums.unrealengine.com/t/accessed-none-when-referencing-player-character/487220)
**Author:** [@AngryDoomGuy](https://forums.unrealengine.com/u/AngryDoomGuy)\ **Replies:** 1\ **Last updated:** [August 9, 2021, 1:34pm UTC](https://forums.unrealengine.com/t/accessed-none-when-referencing-player-character/487220 "2021-08-09T13:34:31Z")
Hello guys! Got a weird one here. For some reason that is alluding me ATM I cant figure out why my referencing of the custom player character isnt working. i’ve included screenshots below, and so hopefully someone migh… --- ## [Moving all actors is diferent in 4:26](https://forums.unrealengine.com/t/moving-all-actors-is-diferent-in-4-26/485780)
**Author:** [@DaveHall17](https://forums.unrealengine.com/u/DaveHall17)\ **Replies:** 0\ **Last updated:** [July 5, 2021, 3:04pm UTC](https://forums.unrealengine.com/t/moving-all-actors-is-diferent-in-4-26/485780 "2021-07-05T15:04:52Z")
I want to reposition the sub levels in a map. The way I’d usually do this is to right click the level I want to move in the level manager and select “Select Actors”. Then I can move all the actors in the sub level into p… --- ## [When can we expect new sublevel Manager? Before UE5?](https://forums.unrealengine.com/t/when-can-we-expect-new-sublevel-manager-before-ue5/482025)
**Author:** [@AXlOM](https://forums.unrealengine.com/u/AXlOM)\ **Replies:** 2\ **Last updated:** [May 14, 2021, 11:16pm UTC](https://forums.unrealengine.com/t/when-can-we-expect-new-sublevel-manager-before-ue5/482025 "2021-05-14T23:16:50Z")
I dunno about everyone else but the world composition window is clunky at best in my opinion, especially if your trying to make a very large open world space game, as it appears to be tuned towards large 2D terrains. Th… --- ## [When can we expect the new "Sublevel Manager" mode? 4.27 maybe?](https://forums.unrealengine.com/t/when-can-we-expect-the-new-sublevel-manager-mode-4-27-maybe/482030)
**Author:** [@AXlOM](https://forums.unrealengine.com/u/AXlOM)\ **Replies:** 2\ **Last updated:** [May 14, 2021, 11:16pm UTC](https://forums.unrealengine.com/t/when-can-we-expect-the-new-sublevel-manager-mode-4-27-maybe/482030 "2021-05-14T23:16:44Z")
I dunno about everyone else but the world composition window is clunky at best in my opinion, especially if your trying to make a very large open world space game, as it appears to be tuned towards large 2D terrains. Th… --- ## [When can we expect the mentioned "Sublevel Manager"? Will it be in 4.27?](https://forums.unrealengine.com/t/when-can-we-expect-the-mentioned-sublevel-manager-will-it-be-in-4-27/482029)
**Author:** [@AXlOM](https://forums.unrealengine.com/u/AXlOM)\ **Replies:** 0\ **Last updated:** [April 16, 2021, 1:31pm UTC](https://forums.unrealengine.com/t/when-can-we-expect-the-mentioned-sublevel-manager-will-it-be-in-4-27/482029 "2021-04-16T13:31:36Z")
I dunno about everyone else but the world composition window is clunky at best in my opinion, especially if your trying a very large open world space game, as it appears to be tuned towards large 2D terrains. The new gr… --- ## [サブレベルを読み込んだらパージスタントレベルも明るくなるのを防ぎたい](https://forums.unrealengine.com/t/topic/481161)
**Author:** [@mandarine\_bot](https://forums.unrealengine.com/u/mandarine_bot)\ **Replies:** 3\ **Last updated:** [April 2, 2021, 2:01am UTC](https://forums.unrealengine.com/t/topic/481161 "2021-04-02T02:01:43Z")
ue4初心者で、軽く調べたのですが分からなかったのでここで質問させていただきます。 サブレベルを新規レベルの「Default」テンプレートで作成して、それを試しにパージスタントレベルに読み込ませたら パージスタントレベルがもっと明るくなって、背景も白っぽくなりました。 サブレベルの背景や太陽？が原因だろうと思ってサブレベル側でこれらを削除してみたのですが、パージスタント側では変化が見れませんでした。 これをやったらサブレベル… --- ## [Sublevel is black](https://forums.unrealengine.com/t/sublevel-is-black/481152)
**Author:** [@Fancy\_Dragon93](https://forums.unrealengine.com/u/Fancy_Dragon93)\ **Replies:** 3\ **Last updated:** [March 31, 2021, 12:33pm UTC](https://forums.unrealengine.com/t/sublevel-is-black/481152 "2021-03-31T12:33:13Z")
Hi Everyone, I can’t seem to find a post about this. When I “move selected actors to level”, the static meshes move over - I build the light - but the scene still remains black and I cannot work on it until I go back t… --- ## [Is there a way i can build only volumetric light cache?](https://forums.unrealengine.com/t/is-there-a-way-i-can-build-only-volumetric-light-cache/480851)
**Author:** [@rise678487](https://forums.unrealengine.com/u/rise678487)\ **Replies:** 0\ **Last updated:** [March 25, 2021, 9:45am UTC](https://forums.unrealengine.com/t/is-there-a-way-i-can-build-only-volumetric-light-cache/480851 "2021-03-25T09:45:34Z")
I have a very large consistent level contains many sub-levels, I used CPU for build lighting( r9 3950x) and it takes about 10h to finish but the result is not good as GPU (2070s) build with a half of time. But one drawba… --- ## [Level Streaming: best way to fake loading time of sublevels (for testing)?](https://forums.unrealengine.com/t/level-streaming-best-way-to-fake-loading-time-of-sublevels-for-testing/480771)
**Author:** [@sirjofri](https://forums.unrealengine.com/u/sirjofri)\ **Replies:** 0\ **Last updated:** [March 23, 2021, 6:52pm UTC](https://forums.unrealengine.com/t/level-streaming-best-way-to-fake-loading-time-of-sublevels-for-testing/480771 "2021-03-23T18:52:41Z")
For a project I use a bunch of streamed sublevels and switch between them. To better test the transition between these levels I’d like to add some fake loading time, for example by adding assets to the level. Since it’s … --- ## [Failed to trigger event because it does not implement the necessary interface](https://forums.unrealengine.com/t/failed-to-trigger-event-because-it-does-not-implement-the-necessary-interface/478185)
**Author:** [@SasMaster](https://forums.unrealengine.com/u/SasMaster)\ **Replies:** 4\ **Last updated:** [February 15, 2021, 8:43am UTC](https://forums.unrealengine.com/t/failed-to-trigger-event-because-it-does-not-implement-the-necessary-interface/478185 "2021-02-15T08:43:10Z")
I implemented an ability to trigger events from the Cinematic Sequencer on the level blueprint. I followed this tutorial: It works, but on each triggered even on the sequencer timeline I am getting the following warnin… --- ## [Lighting needs to be rebuilt after reopening project](https://forums.unrealengine.com/t/lighting-needs-to-be-rebuilt-after-reopening-project/474390)
**Author:** [@anonymous\_user\_0b03321e1](https://forums.unrealengine.com/u/anonymous_user_0b03321e1)\ **Replies:** 1\ **Last updated:** [November 13, 2020, 4:26pm UTC](https://forums.unrealengine.com/t/lighting-needs-to-be-rebuilt-after-reopening-project/474390 "2020-11-13T16:26:15Z")
Hello and good afternoon. I have ran into what I think is a weird lighting problem. We have a main persistent level and 6 sublevels. 5 out of the 6 sublevels are fine and there are no issues. However we have one that ho… --- ## [Level Bounds For Sublevel Of World Composition Too Big](https://forums.unrealengine.com/t/level-bounds-for-sublevel-of-world-composition-too-big/423001)
**Author:** [@TheRealSnazzy](https://forums.unrealengine.com/u/TheRealSnazzy)\ **Replies:** 5\ **Last updated:** [October 11, 2020, 6:18pm UTC](https://forums.unrealengine.com/t/level-bounds-for-sublevel-of-world-composition-too-big/423001 "2020-10-11T18:18:08Z")
I am currently building a game using world composition and streaming landscapes. The problem I am having is that I currently have a sublevel whose level bounds is generating to be much, MUCH bigger than the sublevel’s la… --- ## [Save Sub-Levels](https://forums.unrealengine.com/t/save-sub-levels/471536)
**Author:** [@asomry](https://forums.unrealengine.com/u/asomry)\ **Replies:** 2\ **Last updated:** [September 21, 2020, 6:50am UTC](https://forums.unrealengine.com/t/save-sub-levels/471536 "2020-09-21T06:50:03Z")
I am trying to make a open world map that uses sub-levels to help performance. Every time I load and unload the level it goes back to the way I had it originally set it up. 1, How would I go about saving the sub-levels … --- ## [Getting placed actors on an unloaded level](https://forums.unrealengine.com/t/getting-placed-actors-on-an-unloaded-level/467537)
**Author:** [@Amaresh.Shukla](https://forums.unrealengine.com/u/Amaresh.Shukla)\ **Replies:** 1\ **Last updated:** [July 2, 2020, 10:48pm UTC](https://forums.unrealengine.com/t/getting-placed-actors-on-an-unloaded-level/467537 "2020-07-02T22:48:31Z")
Hello, I am trying to add a data validator to our project with the intention of validating that specific placed actors on certain sublevels are static. We will run this validator when we run the data validation commandl… --- ## [How exactly does world composition work?](https://forums.unrealengine.com/t/how-exactly-does-world-composition-work/467337)
**Author:** [@razmaz51](https://forums.unrealengine.com/u/razmaz51)\ **Replies:** 1\ **Last updated:** [July 2, 2020, 3:31am UTC](https://forums.unrealengine.com/t/how-exactly-does-world-composition-work/467337 "2020-07-02T03:31:34Z")
I still don’t quite understand how this all works. I used level splitter to split about 8k map.This creates a split level template and 9 sublevels and maps in a folder, Then enable world composition. When the split temp… [Next page](https://forums.unrealengine.com/tag/sublevel/1915.md?match_all_tags=true&page=1&tags%5B%5D=sublevel)