I created this post so I can ADD PICTURES in support of a Feedback Tracker issue.
(You cannot add pictures to comments, so I'm doing it the hard way.)
ISSUE #407
http://www.reallusion.com/FeedBackTracker/Issue/It-s-too-easy-to-create-a-duplicate-Keyframe-in-the-timeline
SHORT SUMMARY:
Clicking *near* an existing keyframe will turn it green, so it looks like it is selected, but in fact you can be a couple frames away, so any "editing" will result in a *new* keyframe rather than modifying the existing one. This is probably more likely to occur when you are "zoomed out" on the timeline.
NOTICE:
a) The Frame counter
b) The keyframe that turned green
c) The new keyframe that appeared when I moved the avatar's fingers, so now his hand "jumps" from the old pose to the new pose in the span of two frames


