Ok great! I will take a look this week. I don’t have a student version yet, but I’ll see if I can repro any issues with a normal 2016.
And you do not have to match FK to IK before exporting or anything like that
When it exports, assuming you use the export motion tool, it duplicates the skeleton, constrains it to the original which is driven by the rig, and then bakes the animation down onto the dupe. Then it exports that duplicate skeleton and deletes it from your scene, making sure your scene is still intact.