Gavin Andresen - 2011-01-25 14:36:34

@s{quotedtext} @s{quotedtext}
No.  Unless you're changing your wallet outside of bitcoin, rescanning isn't necessary.

It would be nice if the GUI had "backup wallet" and "merge backed up wallet with current wallet" options-- the "merge wallet" would need do a rescan.  Maybe next release somebody will implement those features...