Confluence has something called a Universal Wiki Converter importer, and it supports MoinMoin:
https://plugins.atlassian.com/plugin/details/213 https://studio.plugins.atlassian.com/wiki/display/UWC/UWC+MoinMoin+Notes And there's a project for taking snapshots of Confluence: http://code.google.com/p/couldit-autoexport/ So in theory, together these could give us what we were looking for: do a one-time conversion from MoinMoin to Confluence, and then a per-release snapshot. But we would have to do some testing to see how well they actually work. JVS