Recurrent projects can be copied to an edition they were explicitly deleted from
Once a recurrent project is approved, it is automatically copied to all descendent editions. However, if a client explicitly deletes a project from a descendent edition, it can still be recreated automatically if that project is updated.
In other words, there is no way to differentiate between adding a new period to a project, and a deletion from a descendent edition + an unrelated update of the recurrent project.