Haha, very funny. In restrospect this is precisely the behavior I should have expected, yes. But consider the confluence of factors here: I installed a new wallet; it did not appear to automatically recognize my existing keystore; it also prompted me to either import an old account or create a new one, but selecting import appeared to do both, while also zeroing out the old account; there was no message about syncing the blockchain and the old 0.7 wallet did not show your wallet balance until it was done. The last issue was the complicating factor here - something funky happened with ethernet connectivity with the one port on the switch this computer was connected to and I ended up having to cycle power to the switch and the router to fix it. Frankly, I've never seen just one port stop working so learn something new - usually unpleasant - every day, I guess.
wow, your story sounds like magic
btw, when I first time installed 1.0 wallet, yes it asked me to import UTC file (and I had backup copy), but an old UTC file didn't dissappear from C:\...\keystore
Your bad than you didn't know where is storing UTC files