Much of following documentation is derived from CARLI's instructions to Relink Purchase Order Line (POL) associated with a P2E resource.
There will be times when it will necessary to relink acquisitions data (POL) to a different portfolio. The vast majority of these cases will be to deduplicate portfolios that migrated information from both Voyager and SFX, but there could be other instances where this method is used.
I intend to use my own screenshots and instructions here, but until I am able to do that, please follow the instructions linked above.