While migrating our servers services from 10.5 to our 10.6.2 production server one of the easiest migrations that I had found was to migrate the 10.5 Wiki. Simply copying files and making sure that the permissions remain in tact are really all you need.
However in 10.6.2 there is a detachment from the way you authenticate. You create access for each blog based on the settings in the web interface rather than in Workgroup Manager. This threw me off a bit the first time due to the fact that I had already had our previous wiki server split up into groups using workgroup manager.
Here is how I migrated our wiki, the default directory for wiki and blogs on 10.5 and 10.6 is Read more..