Site was updated from 3.1 to 3.5 successfully.
When going into the moodle messages area, no prior messages are appearing and a message of "Your messages are temporarily unavailable due to upgrades in the messaging infrastructure. Please wait for them to be migrated." appears.
Do I need to anything to make this happen? roughly 18 hours have gone by since the site in its upgraded form has been up and running again. I may have read the release notes incorrectly but it seemed that this was automatic, but i wanted to be sure.