Thanks RAMA for that great link and quotes.
For the non-industry folks :
Dailies with 10 frame handles really helps with TNG-R because most likely that means only the 'circled takes' 35mm negatives were saved. A negative cutter cut the negative with these selects. This would lead me to believe notes were kept for take#s used and eye matching cuts gets it down to frame accurate.
So not ALL of the camera negative was just stuck in a vault.