It is the same process as a normal relink- where you want to take something from low res to high res, or low res to ama link.
I recently did this with a 3 hour doc that was using around 70 tb of footage..spread out over 3 pegasys drives, and originally cut on a mac system. I needed to uprez it and transfer to resolve on my pc system. I was not fun, but doable.
Use the “alt” drag to bin for quicker ama linking in this situation.
Make a new bin called May 4 amas…or something similar.
open an explorer window and alt drag the folders you want over to that bin. If you have tons of footage…as I did, I found at a certain point that the bin was just getting too big, and I would then start another bin.
The problem comes up when the system starts doing an auto save, and these huge ama bins take forever to save. If you can do any kind of selective ama-ing, it will save you time in the end.
Once that was all done, it was a matter of relinking. Select all your ama clips, and right click on your sequence- selecting the relink to all selected clips in open bins option.
Glenn