Hi Maureen,
Unfortunately we dont have access to a 'previous version' of a specific table per se, but we Do have access to Backups of your entire Method database. Unfortuantely we cant just restore specific tables/fields by restoring the backup however, and the whole process would likely need the involvement of one of our Professional Services team, as the restore can be quite complicated.
How many records do you estimate you lost in your ActivityJobItems Table? I would strongly suggest you reach out to your Account Manager and have them walk you through the next steps of a potential restoration process. If you are not sure who your Account manager is, please feel free to email me directly <b.hargreaves@method.me> and I can forward you their email address and loop them into the conversation.
Thanks Maureen.
Regards,
Ben