It's also worth remembering that the individual clips mixed in the MC module and transferred to the main timeline can be lengthened or shortened by dragging the edge boundaries as normal.
In effect the MC module applies mark in/out markers to the original clips (which are still "available" in their entirety) and applies the marked clip to the main timeline.
So, if you need overlap transitions, it may be possible to manually adjust the start and end of the relevant clips to allow for the transition time and retain the desired video length.
Cheers
Adrian
Life is really simple, but we insist on making it complicated. (see below)
Confucius
AMD Phenom IIX6 1055T, win10, 5 internal drives, 7 usb drives, struggling power supply.