Unreal Engine Issues

UE-283330

Generated instances can not be cleaned up when PCGVolume is copied to a different level

Generated instances can not be cleaned up when PCGVolume is copied to a different level

Description

Copying a PCGVolume beyond a level creates an instance that cannot be deleted.
In UE5.5 or later, it is possible to delete the instance by pressing Cleanup button with Ctrl key (purge all components and actors).

Steps to Reproduce
  1. Open the repro project linked in additional info URL
  2. Open /PCG/LV_TestPCG
  3. Select PCGVolme actor in outliner
  4. Press Ctrl + C to copy the actor to clipboard
  5. Open /PCG/LV_TestPCG2
  6. Paste copied actor to the level
  7. Move the PCGVolume
  8. Make sure the generated instances in the previous level are still alive
  9. Press Cleanup button in detail pane
  10. Only newly created instances are removed

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Fixed
ComponentUE - World Creation - Procedural Tools
Affects Versions5.4, 5.5
Target Fix5.6
Fix Commit38477917
CreatedMay 19, 2025
ResolvedMay 20, 2025
UpdatedMay 26, 2025
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