Ok i see.
How di I know if the catalog was purged?
If i read the log of the backup of the computer I see
[Normal] De : VBDA@pn-edi1.nt.florette.com "C:" Heure : 31/05/2015 09:31:21
Statistiques du système de fichiers :
Répertoires ........ 157
Fichiers normaux ...... 217896
------------------------------
Total des objets ...... 218053
Taille totale ......... 4.80 Go
So It was backuped but why it says 0 objects in the other screen.