I’m moving from 5.4.4 to 5.5.0 using the same file. In 5.4 the file type is recognised and the appropriate dialogue appears, in 5.5 the (not sure how to describe it - top-level? Generic?) import dialogue appears. Happy to share, the file has come from the Terabilis Mixamo to Metahuman converter.
OffensiveIdle.UE.fbx (4.4 MB)