Sometimes you find a wiki about your favorite topic that doesn't run on MoinMoin. You work with it for some time, edit and add pages, but then comes the moment when you miss some features from MoinMoin more and more. You write an e-mail to the admin, asking whether she could imaging migrating to MoinMoin. She says: "yes, why not? If you do the work." And then there you are, with a bunch of wiki pages in some incompatible markup.
This page is about migrating to MoinMoin, giving hints and scripts.
For a potential long-term solution see WikiMarkupStandard.