a strange file

i have added the file to the unrecognized files list of comodo,and choosed to lookup the file from the cloud.the result shows the file is unknown to comodo.but just at the moment when result of the look up came out,the file get moved from the unrecognized files list to the trusted files list of comodo.anybody can explain why?here is the file:http://valkyrie.comodo.com/Result.html?sha1=e968b25af13663d62f259df5faa42039befe5f29&&query=0&&filename=CNCBGuard.exe

Prob some issue with the cloud again…