Try this work flow.
Instead of multi trimming do the trimming manually in this way:
With the entire video in the Library
1) click on it so you can preview in the pane in clip mode. Do not split the audio from the video and make sure your project settings match your video setting (you can automate this in File/Preferences and check the box that ask for the settings to match on adding first clip)
2) Let say you want a 30 second section from the first 60 seconds of the video. Use the trim handles and mark the in and out points in clip mode. You'll know you did this right because the thumbnail image will change in the Library to the first frame of the "in" point.
3) drag the video from the library onto the time line
4) using the exsiting thumbnail in the library (the one you just dragged over) click on it to view it on the preview pane
5) follow step 2 again using a different section of the same thumbnail
6) keep going like this till you are satisfied you have all the sequences you want
Let us know how you go using this work flow. I'm trying to elmininate the chance of multiple sources of video files in the multi trim process.
Editing problems
Moderator: Ken Berry
