# How to remove Nav Mesh from Migrated Assets

**URL:** <https://forums.unrealengine.com/t/how-to-remove-nav-mesh-from-migrated-assets/1156133>\
**Category:** World Creation\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, question, fortnite\
**Created:** [May 6, 2023, 3:25am UTC](https://forums.unrealengine.com/t/how-to-remove-nav-mesh-from-migrated-assets/1156133 "2023-05-06T03:25:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![spentak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/spentak/32/642372_2.png) [@spentak](https://forums.unrealengine.com/u/spentak)\
**Post date:** [May 6, 2023, 3:25am UTC](https://forums.unrealengine.com/t/how-to-remove-nav-mesh-from-migrated-assets/1156133/1 "2023-05-06T03:25:39Z")

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Sometimes I bring over levels from Unreal assets, but they had navigation baked in. But I can’t see any way to clear that navigation (Even in Unreal I don’t see the NavMesh), yet I get these errors. Any quick way to fix this problem from a migrated level?

```auto
Found disallowed object /Script/Engine.NavigationSystemConfig
Found disallowed object /Script/NavigationSystem.NavigationSystemV1

```

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**Author:** ![Hourences](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hourences/32/1057442_2.png) [@Hourences](https://forums.unrealengine.com/u/Hourences)\
**Post date:** [May 9, 2023, 2:22pm UTC](https://forums.unrealengine.com/t/how-to-remove-nav-mesh-from-migrated-assets/1156133/2 "2023-05-09T14:22:59Z")

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Not sure if this will work but some ideas to try:

If at all possible first delete all of the nav mesh actors, and rebuild paths within UE.

If that doesn’t do it, I just posted something related to the disallowed object topic here that might help here too [Asset Validation Issues - #14 by Hourences](https://forums.unrealengine.com/t/asset-validation-issues/817504/14)

If you copy paste the actors in the level to notepad, copying it again within Notepad, and then back to the editor that might sometimes strip out some of the data that is not longer present in that build of the engine.  
Alternatively look for the nav mesh info within the text in Notepad and manually remove it there before pasting it back.

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [June 8, 2023, 2:23pm UTC](https://forums.unrealengine.com/t/how-to-remove-nav-mesh-from-migrated-assets/1156133/3 "2023-06-08T14:23:15Z")

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