You don't have to worry because you won't lose the information because it is backed up on your computer.
There are 3 modes that you can choose from in order to perform this kind of operation:
1. The Quick Mode that will prompt you to type the MSN Messenger's password directly on your password entry.
2. The Prompt Mode that will prompt you to enter the current password of the messenger.
3. The Type the URL Mode that will prompt you to enter the address 50e0806aeb farbar