This feature requires the Role Permission, Change Invoice to Repair Order, to be enabled under Administration -> User and Role Management -> Roles.
If this is used and Accounting Link or an integration to any DMS then additional steps will be required to get data corrected in those systems.
Open the Invoice that needs to be changed back to an RO.
Click the Action Menu button and select Change Invoice to Repair Order.
If Accounting Link is activated this message will appear.
If a DMS system is integrated this message will appear.