BE 2010 R3 Cataloging process

Hi.  I've created a B2D folder containing numerous existing 4Gb BKF files in order to do a system recovery.  By right-clicking the folder (in BE devices) I can Inventory it.

However, in order to Catalog it I have to right-click one of the BKF files.

My question is - does it matter which BKF file I select for Cataloging?  For example, should it be the oldest file or will BE catalog the entire folder regardless of which file I choose.

As you may guess this is my first encounter with Backup Exec..

Richard.