thanx but I don't think you answered my question,
EX if I have a 1k cl with 400 bal
can i transfer 400 from another card to this card before paying in full?
yes since you will be paying off the lowest interest first and they will nail you on the balance if not starting at $0.
Also if you BT stop using the card you BTd to until it is paid off. Saves money in interest.