Problem with generation update delta for virscana.dat

Hello, community. I have found that LiveUpdate downloads full virscana.dat almost every LiveUpdate session with full virus definitions download. It may be indication of update delta generation problem on Symantec update servers for this file which in turn can be due to erroneous information sent by product LiveUpdate.

 

Product version: NIS 20.1.1.2 Eng

 

Delta file: http://rghost.net/40636416