migrating internet saved passwords to a new desktop session

we have just installed a new server with a new local domain name, which is working fine.

However, one of the users has realised that he has dozens of saved / cached passwords which he used to use in his old user account.

As we still have all of the users data in his old user folder, bearing in mind we are connected to a different new domain, is there a way to recover the saved password information, to transfer it to his new local ie session?

We simply copied his favourites from his old folder to the new user folder, and that worked fine, but not sure what is possible with regards to the saved password information.

If anyone can advise on whether it can be done, and if so, how, that would be very much appreciated.

Many thanks