I just changed my email from using pop to using imap. Per the advice from my ISP (which matches the advice here), I removed my pop account and then added an imap account. I now find that the mail-processing rules I'd spent years building up seem to be missing. When I go to File>Info>Manage Rules & Alerts, the only rule listed is "Clear categories on mail (recommended)".
How can I recover the rules that presumably used to be associated with my pop account? I should have backups of all Outlook-related files, so getting at the data itself should not be a problem.