I've just installed Commons 3 on a sandbox server and am curious where to begin migrating groups data over. I realize this is may also apply generic D6 to D7, but is there additional consideration for a Drupal Distribution? What steps should I take to move content and groups from Common 2.x to Commons 3.x?
That is, how can I move existing groups from Commons 2.x into Commons 3.x that will include content types attached to those groups (discussions, postings, events, wikis)?
I know that Activity Streams are different between these versions and we can live with out that, but I'd like to bring over content attached to the appropriate groups and users.