In addition to the above comparison between 5.2 and 5.4, it’s worth noting that this isn’t the only instance where, since 5.3, the issue of curves no longer being associated with the skeleton can occur.
Another instance is with pose assets.
In 5.2 when you create a pose asset from an animation sequence, the resulting pose asset animation curves would automatically appear on the skeleton.
However, after repeating the exact same steps in 5.4, the pose asset animation curves are not visible on the skeleton and are therefore not accessible from control rigs.
I have a feeling that these two issues are related somehow.
It seems that any animation curve which isn’t a morph or material type curve, just do not get registered on the target skeleton since 5.3.
The only workaround I have right now is to generate a long list of the curves in Houdini which I can then copy and paste onto the skeleton. If I do that they are visible on the skeleton and do remain that way, however it would be far batter to not have to go through those steps as it can cause other problems.
It would be far better to restore the previous functionality of being able to import these curves along with the source Fbx file and, have pose asset curves once again automatically associated with the target skeleton.
Thanks
Peter