STR:
- Open iClone 8
- import a humanoid character
- add single motion clip to the timeline
- break the clip into 5 pieces using the Right Click > Break action in the Motion row of the timeline
- select all 5 clips
- right click part of a clip in the motion row
- select Flatten Motion Clip > Flatten All Layers

Expected Result:
- any sampled or custom keys (of which there are none in this example) in the clips would be flattened and all 5 clips would remain intact

Actual Result:
- the second and fourth clips are completely deleted from the timeline