I put together an SFM to create a Work Order from a WO. It's configured now so it creates copies of all the Work Details and assigns them to the new WO. It would be preferable to reassign the existing Work Details to the new WO using that same SFM. This way there wouldn't be duplicate Work Details.
Alternatively, there could be the ability to delete the Work Details assigned to the original WO. The preferred method, however, is to just reassign the child Work Details.
Communities Returns Management & Depot Repair Work Order Management