Have any full course backups (including users) of the 2.2 version prior to upgrade?
Moodle upgrades may not clean out tables from modules (add-ons) of which it is not aware so would think it not unusual to find some tables/references to those add-ons in the DB after an upgrade without the addons being present in the newer code directory.
Have a full backup of the 2.2 site? Might have to do the upgrade again ... this time with those addons pre-installed (at least unzipped and in place).
'spirit of sharing', Ken