Does the issue occur in the editor or during gameplay?
If it's a gameplay issue, please specify which movement system and camera type you're using (free movement vs. grid movement, third-person vs. first-person) or N/A if not applicable:
Briefly describe the issue you're experiencing:
If you create an animation, or edit an existing one, and set the frame range to reverse ie 3 > 1 the bottom left display which usually says what animation the frames are in will say (none) for those frames when you save and reload the model.
Are there any errors in the in-game debug console or external console window?
Provide the steps necessary to reproduce the issue:
- open a character model (base_justin) with animations
- edit the idle animation (works with any) and reverse the animation frame range (2 - 1)
- Save and reopen the model
- Look at the frame display at the bottom left of an idle frame

Provide a download link to the bare bones project (strongly recommended if it's an in-game issue, since this helps significantly when attempting to reproduce it; the report will also be given more priority in this case):
Can be seen easily by reversing any models animation