How to reset registration IDs when sender ID is changed?

[Lenin Raj Rajasekaran]

I have about 100 registration IDs generated from users. I had to move my developer account to another email address. So the sender ID has changed now. If I use the old authorization key to new users, it says "MismatchSenderId". Same error for new authorization key to old users. Is there a way to reset all the old registration IDs to new sender? So I can manager with just on authorization key.

[Spundun Bhatt]

You can have the new version of the app send a new registration id to the server. I think that's the right way to do it.