External Actors & Objects when not using World Partition

Development Pipeline & Plugins
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Hello,

We’re encountering an issue in our UE5.4 AEC project where two folders _ExternalActors_ and _ExternalObjects_ are being generated, even though World Partition is disabled and External Actors is unticked.

Our workflow involves importing complex Revit models via Datasmith. While these models contain a large number of individual objects, we merge them in UE5 to reduce complexity (typically one mesh per material). The project is version-controlled using Git.

The problem is that these folders are spawning tens of thousands of files, currently around 40,000 folders and 35,000 files, which are being flagged for commit in Git. This seems excessive, and we suspect these files may not be necessary.

Could you please advise:

  • Is there a way to prevent these folders from being generated?
  • Is it safe to delete them without affecting the project?
  • Are there any best practices for managing this in Git?

Thanks in advance!

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I can answer my own question there, we are using Level Instances which did have Use External Actors ticked…

So main scene didn’t have Use External Actors but we are using Level Instances per building, individually these bulding levels were the issue.

Makes sense when you realise…. just one of those game engine things, many buttons and boxes everywhere :smiley:

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