This bug?? is a huge PITA for my workflow, which relies heavily on imported animation curves which used to show up fine but since 5.3 have disappeared.
Would be great if someone from Epic could chime in and let us know if this is by design or is indeed a bug. I did log it as a bug but heard nothing back.
I understand there are workarounds but it adds several extra steps which in previous versions of UE were not necessary.