CCAV did not detect samples which CIS detect

I have a problem with CCAV stable build on my fresh Windows 7 SP1 64bit fully updated system.
I sent samples to Comodo lab, Comodo labs added the samples to antivirus database of Comodo.
CIS updated the databse and detected the samples. CCAV has no manuel update so I right click and scanned the samples… only some of the samples are detected. Other samples which laredy in database did not detected by CCAV.
I think it is a problem with CCAV cache system. When I tried to run these samples CCAV detected them in sandbox.

Can you please give us a fix for this? Maybe a automatic cache update before the scans?