Thanks for the advice! That makes perfect sense. Unfortunately it’s still a rather laborious process, but at least it’s accurate. I’m finding I still have to copy the original clip to a blank track, remove the time-alteration effect, remove any transitions (so they don’t render—I want to keep things editable) and extend the in/out points of the clip to start/end of the actual footage, and then adjust the in/out points to match the original clip—or else when I replace it, the new clip will start where the old footage started—as opposed to where the cut was made, if that makes sense?