What are Google Groups and Solve Category Tags? How are they related?

Category Tags in Solve and Groups in Google are essentially the same things - they help organize contacts. If the category tag was applied to a contact in Solve, and that contact is synced over to Google, that contact would “retain” the Solve category tag by being categorized in the corresponding Google group. If the Group did not exist in Google Contacts prior to the sync, it will be auto-created. The reverse is not true > however - groups that do not exist as tags in Solve don’t get auto-created and subsequently applied to the contact, upon sync. One has to create the tag in Solve first and then any contact from Google belonging to that group will have the corresponding tag applied in Solve upon syncing over.