I assume that before you had mapped this new drive, GBPVR had looked for the recordings listed in it's database and could nbot find them.
There is a configuration setting which defaults to remove entries from the database if the file no longer exists.
I would suggest looking in your GBPVR folder for a recordings-dump.xml -I think it gets generated at each EPG update. (or something like that - check the date / time of the file)
In config, go to the plugins tabs and click on the import recordings button and point it to that file and everything will be back as it was (as long as the files exist on the same folder under the same drive letter as they did before your upgrade)
You may want to check the XML file to make sure before you import it.
"Shut up brain, or I'll stab you with a Q-Tip!"
--= Win7, C2D 2.93 GHz, ASUS 9400GT Silent, 2GB Ram, Few HDD's, 3TB unRAID server, Samsung 50" 1080p Plasma via HDMI, 40" 1080i LCD via VGA =-- * PVR2000 Analog PCI / Avermedia DVB-S PCI / Hauppauge 2200 DVB/Analog * PCH GBPVR Client * *BD-E6500 w/ NPVR client*