Level Instance Handling Issue: SteamAudioStaticMeshActor Not Persisting

[chenhaoran10]

System Information

• Steam Audio version:4.6.1
• (If applicable) Unreal Engine version:5.6.0
• (If applicable) FMOD Studio version:
• Operating System and version:Windows11

Issue Description
When exporting collision information using FSteamAudioEditorModule::ExportAllLevels() , generated SteamAudioStaticMeshActor instances should persist when switching levels.

Actual behavior: SteamAudioStaticMeshActor instances disappear when switching levels, particularly when a level contains many level instances. The actors fail to save properly.

Steps To Reproduce

• Create a level with multiple level instances
• Run the export functionality that triggers FSteamAudioEditorModule::ExportAllLevels()
• Observe that SteamAudioStaticMeshActor instances are created
• Switch to a different level and then switch back
• Notice that the SteamAudioStaticMeshActor instances have disappeared

[lakulish]

@chenhaoran10 Good catch, we are able to reproduce the issue, and I will be committing a fix shortly. The ExportAllLevels functionality will now skip level instances. Instead, you should attach the Steam Audio Dynamic Object component somewhere in your instanced level, and export it from there. This way, the dynamic object functionality will automatically handle instancing and transforms.

[lakulish]

Release 4.8.0 should contain a fix for this issue. Let us know if the issue persists.