[5.5] Fbx animation import - why am I now getting two anim sequences?

My workflow relies heavily on importing FBX animations which contain both bone transforms and animation curves.

In 5.4 this works perfectly. On import I would get a single anim sequence containing both the bone transform tracks and the animated curve tracks.

However, in 5.5 I now get two anim sequences. One of them contains the bone transform tracks and the other contains the animation curves. Why?

Thanks
Peter

By any chance, could you share this FBX with me in DM so we try to repro here?

Thank you for looking into this problem.

I have sent you a test file as requested.