Selecting one tape library drive only for backups doesn't work. (4045125)

Title: Selecting one tape library drive only for backups doesn't work.
Date: Jul 10
Product & Version: NetVault All
OS Version: All
Module & Version: N/A
Application version: N/A


Symptoms:
A customer wants to target one Drive from a tape library that contained 4 Drives.
In the Target tab, the library was first selected which also selects all drives, then 3 drives were explicitly excluded (red cross).
However backups would randomly take the next available Drive (whether the Drive was ticked or had a cross next to it).

Instead of selecting the tape library changer and all the Drives are automatically ticket as well; just select the one Drive, so that the tape library changer is automatically selected, but the other three Drives have blank selection boxes next to them.
Then if you wish to select certain PCs to use that Shared Drive, then make sure that you select the other PCs under the Drive so that there is now a red "X" against them.
Once all the above has been performed, save the it as a new Target Set and use this for the backup.