I tried both. One without In and Out marks and another time with In and Out Marks. Same result. It appears that the export is shortening the length of the movie on its own. When I tried to export 30 min worth, I only got a 12 min 20 sec. QT. When I placed In and out marks for a 11 min. movie, it produced a 4 min QT.
I’m going to try to trash the preferences to see if this resolves my issue.