Need help with QT Pro Editing Question re: lost footage

Stumped on this issue. Had captured miniDV footage (7 minutes in length and 1.09 GB in size. I wanted to extract 12 seconds of this to send out as a clip. Steps i took were:
1) Cut the footage on either end and was left with 12 seconds i needed.
2) THen Saved File as and gave it another name.
3) Now my original file is still 1.09 GB (which it should be) but only plays the 12 seconds that i kept
If i open that file, and click save as, option to save as self contained shows that clip should be 43.6 MB which is what my renamed and altered file is.
Question, any chance i have somehow "Hidden" the content so the QT player won't play it but it's still in the file somewhere. How can i extract?
Naturally, i don't have the original master miniDV footage. any help appreciated.
Dual 2.7 PowerMac G5 Mac OS X (10.4.5) iMac G4, iBook G4, Multiple Lacie Drives

1) Cut the footage on either end and was left with 12 seconds i needed.
Normal method is to set in/out points and simply "trip to selection."
Question, any chance i have somehow "Hidden" the content so the QT player won't play it but it's still in the file somewhere. How can i extract?
If the "Play selection Only" option is set, then only the 12 second segment will play but the progress bar will display the entire file to include segments before and after the "selected/playing" portion. If the progress bar is only as wide as the playing segment, then you have inadvertantly saved the "trimmed" data to the original file and the data is probably lost. Not sure if this works llike a "secure HDD delete" (which overwrites the unwanted data) or a simple "HDD delete" which only marks the data as not existing but actually leaves it it tact. If the latter, then there may be some sort of "movie undeleter" utility out there, but I personally know of none. In either case, the file size listed cannot be relied upon as it file container is much like a partially filled milk bottle now -- the bottle size remains unchanged but the bottle is no longer filled.

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