Hello! I recently updated one of my projects from Unreal Editor 5.4.4 to 5.5.3, and now my collision hulls aren’t importing correctly with LODs, even when using the exact same .fbx files that were working for me in 5.4.4.
To be clear, the UCX_ prefix is interpreted correctly when importing with this basic hierarchy, and I get the correct collisions:
However, when I try to import the same asset with grouped LOD meshes, using any of the following hierarchies it no longer reads them as collisions:
- 2. 3.
As a result, I end up with the collisions being read as standard mesh geometry, overlaid with the base mesh, like this:
Considering that it worked in UE4.4, and still works with a non-LOD hierarchy, it seems to me that this could be a new bug introduced with UE5.5? Or perhaps there’s some more full-proof way of arranging my meshes that I haven’t encountered yet.
I’ve been importing LODs and collisions in Unreal for ~6 years, and this is the first time that it’s flat-out refused to work, so I’m a bit lost.
If someone can confirm for me that this is an issue with UE5.5, I’ll move this thread to the Bug Reporting category 
. It’s always possible that I’m missing something obvious though, so any input would be appreciated!
