[Networker] Exclude databases or instances from exchange backup

Hello list,

  can I exclude databases/instances from an Exchange backup? Because I get 
these messages because this instance is deliberately shut down:

46757&#58;nsrxchsv&#58;Processing storage group "SG2"
52663&#58;nsrxchsv&#58;HrESEBackupSetup&#58; Instance not found&nbsp; 
&#40;0xc7fe1f45&#41;
52241&#58;nsrxchsv&#58;&nbsp; Exchange ESE HResult&#58; -939647163 
&#40;0xc7fe1f45&#41;; last&nbsp; error&#58; 0 &#40;0x00000000&#41;
30902&#58;nsrxchsv&#58;No databases are mounted.
46767&#58;nsrxchsv&#58;Completed backup of SG2&nbsp; Status&#58; 0xc7fe1f45 
unknown error -939647163 &#40;0xc7fe1f45&#41;


Some info:

server: NW 7.6 on Win2008R2
client: NW 7.5.2.build.452 on Win2003SP2 cluster

Thanks, regards, Edgar.

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