Users have been deleted and I want a way to add them back to Confluence and Jira groups.
is there any way to add the deleted users back to the group?
Deleting is permanently removing the user, whereas deactivating, activated, the user record still exists but is not currently being used. A deactivated user can be reactivated, but once a record is deleted, it is gone and you need to recreate it losing any previous history.