Sorry Tom, but incorrect.
I know exactly what bob is talking about, as I'm finding myself having this issue now too.
Before 10.2, I could balance on shot, and pass it along to the next, and it would always match in the uses I need. What are those uses? Say I have one shot, but 2 takes. And the actor is in a different position in take 2... balance color will (and is) giving me 2 different balances for these 2 shots, even though camera settings were identical. Another use - a panning/tracking shot. Before I could balance for one, and have it properly match for any other instance, as I do the color bit last. Now, i have to spend a lot more time getting it there, using match color, and a 3rd source for the frame to match, and that still varies.
It's definitely a useful feature and it has been lost.