If I use the same source clip in a timeline (say 3 or 4 different sections of the clip by dropping the same clip on the timeline and just trimming it differently) and want to stabilize them all, how do I do that? The first instance of the clip lets me use warp stabilization, but then when I try to apply it to later instances of the same clip in the timeline, it says I can't do that. How do I apply the stabilization to later instances of the same clip in the timeline?
Did you try Copy/Paste Attributes?
After trimming the clip just apply the warp stabiliser to it without copying and pasting. You can't copy and paste the warp stabiliser because it needs to analyse the pixels of each clip everytime its applied.
It its the same instance just alt+drag. You can trim the copy. If the clip gets trimmed longer it needs to be analyzed for the frames that have been added.