CSG Deunion Crash

The following model crashes studio on attempt to separate:

No deliberate attempts at vandalization such as deleting child data have been performed, but plugins were heavily used in the environment where it was created. Maybe it’s another deleted-item-being-unioned sort of problem?

And yet checking the file confirms the ChildData is empty…

Man… that’s unfortunate.

I definitely legitimately produced it from within studio though.

You’re not alone: I’ve got lots of legitimate unions that crash when separated. I don’t know if they’re missing the ChidData, though.

I have had no crashes… but I have had 0% luck un-unioning unions that are not raw parts. I only get unsolvables.