Yep, now that you point that out it would have been more correct if it read "Her name was not Belle during the Curse" or someghing like that, the way I wrote it was a bit vague and ambiguous. But I still think that is a certain fact by now.
But well, I guess we're going to find out more about this subject next week, so let's just wait a bit more. :)
I agree with Prince. We know that Belle now has amnesia, but we do not know for a fact that she has a different name now. It is possible she might assume another name, but it's also possible she won't.