Do Edit Layers in UE5.5 Exist at Runtime, or Must They Be Collapsed/Baked?

Hi everyone,

I’ve been experimenting with the new Edit Layers feature in UE5.5 to non-destructively sculpt and flatten my landscape for roads and other geometry workflows. It works great in the editor but I can’t find any documentation on whether these Edit Layers actually persist into the packaged game.

My understanding so far is:

  1. Edit Layers are editor-only. They don’t show up in-game unless you merge them.
  2. The “Collapse” button in the Layers panel appears to be the only way to bake a layer’s changes down into the main heightmap (or weightmap), which makes the edits permanent.
  3. This collapse operation is destructive, so you need to be sure you’re happy with your edits before collapsing.

What I’ve been doing is:

  • Create and edit on a separate Edit Layer while designing roads (using the flatten tool, spline-based flatten, etc.).
  • When I’m satisfied, collapse that layer onto the base heightmap so that my changes actually appear in the packaged build.

This workflow seems logical, but I’d love confirmation or clarification:

  • Do Edit Layers have any impact at runtime (e.g., are they automatically baked when cooking or if they have some drawbacks)?
  • Or must you always collapse (bake) them yourself before cooking/publishing?

Thanks in advance for any insights or official word from Epic on how these layers are intended to work in a shipping game!