Today I was forced by FeedBurner to migrate my accounts to a Google account. My feeds (including the comment feed) therefore have now shifted from…
You don’t need to worry because the older feed will be automatically redirected to the new one. Email delivery will be “…powered by Google” instead of FeedBurner, but no other change apart from that.
I don’t understand why Google is doing this. Why bother will all the migration and redirection? They could’ve simply just migrated the account without the URL changes and “from now on you need to login from feedburner.google.com”. When you take over a company, learn something from Yahoo! and the way they handled Flickr / del.icio.us transition.