I once messed up some track motion that I had done VP when later in editing I needed to move all events on the time line. I just recently noticed this in VP Help under Locking Envelopes to Events:
"From the Options menu, choose Lock Envelopes to Events if you want envelope points and position to move with an event when it is moved along the timeline. This option also locks track-level keyframes to the events on the track. When keyframes are locked, you can move events along the timeline, and their associated keyframes move with them."
I assume using this option would have solved the problem I had of needing to move track motion events along the time line. Is there a downside to selecting Lock Envelopes to Events as a default setting for all of my projects?