Its because each TC break is “considered” a different reel.
At the pro level accurate TC is extremely important.
TC on a single reel should be continuous, by design.
If a “break” is detected, the software identifies the next “TC area” as a different “sub-reel”.
That way if there are several identical TC numbers (many times the camcorder resets to 00:00:00 if there’s a break),
if the reel name has a -B or -C after the name, you’ll know better where on the reel to LOOK for the logged cut.
A good way to avoid this is to NOT capture an entire tape, but manually mark your good takes “by hand” and then capture them as you mark them.
Another method, which will be even BETTER if you need to “BATCH” digitize clips now or at a later date, is to connect two DV decks or camcorders together via FireWire and make a new copy of the tape(s) with broken TC.
The copy will have no generation loss (it will look exactly like the original) and have a new continuous TC.
You would then only capture from the copy and avoid using the original tape with the faulty TC.