NV+ is dying have one failed disk need to upgrade now

Even more fun I found a cap on the backplane that had come off soldered it back. I put everything back together and booted and was able to see it in raidar and thought I was good to pull the remaining data off in an upgrade. I was wrong however, upon further examination it was showing 1gb/1gb free. I checked into it an all my files were missing. I enabled ssh and checked the partition maps of the drives. Drive 2 showed no partition map. I thought I would be clever and take the controller from drive two and put it on the failed drive 3 and try again it wasn't working so I tried it via a data->usb connector and the drive is unresponsive. So I put everything together and verified partition maps on drive 1 and 4 are fine. Can I load up drive 4 in fdisk, pull the drive replace it with drive 2 and write the partition map to drive 2? If so will it maintain the uid for lvm?