netmeg - 1:49 am on Nov 15, 2012 (gmt 0)
Yep, I moved my site to WP with completely new URLs, Google had it all sorted out in about three weeks. Some of the old URLs are still showing up as 404s in my GWT, that's about the only fallout that remains. Had great rankings before, great rankings after. But I too carefully picked my slowest time just in case. I didn't have to, as it turned out - but I still would again.