Hi, James1
Thanks for taking the time to address my query.
I'm new to this video business and a total neophyte with PD. Maybe I have my terms confused, but I would guess that you're describing an edit. I want to reduce the visible area on the whole video sequence, which I'm referring to as a crop.
I found the wherewithal to view, yet again, a PD Toots tutorial on video cropping (
http://www.youtube.com/watch?v=7Lsn369hlk
and noticed - for the first time - the step that allows one to advance the video to the end of the segment one wants to crop, and select the "repeat previous frame" option. This retains the crop as set without the zoom effect.
Hey!... I just answered my own question!
Paul