This question was posted in February, with no answer. Although my video is not the same, I have EXACTLY the same problem.
"I have some 8mm video that I've captured as one long DV (16GB). I've run the analyzer on it to split it into scenes based on content and dropped some of those scenes onto my timeline. After completing my editing, I ran the project archiver in trim mode and specified my external drive for the project. Rather than creating new clips with handles, I got the entire 16GB DV file copied over."
What am I doing wrong?
Dividing a video using the Auto Analyzer does not technically create new, shorter clips. It just creates trimmed segments of the big video.
So, when you archive a trimmed video, you get the whole video.
I am not sure how you are getting trim mode from Project Archiver. As far as i know there are only two options there
1. Archive Project: this considers clips added to timeline only. This is generally smaller in size than full video asset.
2. Copy Project: this archives the full assets of video which also includes clips not used in the timeline
So if i understand correctly, if you want to reduce the size of archival use first option.