When migrating a SMF forum to Wedge, is it recommended that all SMF Mods and their data be removed before migrating? I see no reason on bringing over to Wedge data from Mods that will no longer be used.
Forums aren't migrated. You're effectively creating a second forum, in a different folder, where you then import your SMF data, allowing you to compare both systems and decide which one to keep. If you want to stay on Wedge, you'll then need to rename your SMF folder to something else, move your Wedge folder over there, and proceed to update your internal URLs to point to the correct positions.