I have the same issue with EUP Menu and Simple Trainer. It makes trying to set up wardrobe in EUP Menu quite cumbersome. I haven't tried Menyoo, but it doesn't sound like it will fix the issue.

9 months later and it's still a thing.

**Some files not imported, more information below.

carvariations.ymt.xml(Line 0): Unable to import META/PSO file.**