Application Development Software

We are attempting to migrate the mail stores from Sun Messaging Server 5.2 on Windows to iMS 5.2 on Solaris. We used imsbackup to archive a test account. When we tried to restore the mail (using imsrestore) on the destination server, it fails (the user's mailbox is empty). We used "imsrestore -t" to validate the archive prior to the attempt at restoration.

We suspect that this is because the mail stores are named differently. The source mail store is named "MYMAIL" and the target is named "Portal1B". Is this likely to be the cause? If so, is there an easy way to correct this?

Please note that the iMS services are a component of Luminis portal so we can't upgrade even if there are tools available in a newer version that makes this easier.

Thanks in advance.