yes the original brush graphics are retrievable

the way the xara brush system works, each folder set in the line gallery is actually loaded from a separate XAR file

you can reorganise these files if you wish

they are held in the program folder:

C:\Program Files (x86)\Xara\Xara Photo Graphic Designer 11\Templates\ENG\Brushes

you should make a backup copy of the originals first

too many brushes loaded at start up may slow the program down