WHQL Signing windows 8.1 and Windows 10

Hi,

I have submitted HLK package for windows 8.1 and windows 10 1511, 1607 and
1703 builds on Microsoft Dashboard.

After signing when I downloaded i got 4 set of folder in which catalogs are
present.

My question is why there are 4 set of driver , Shouldn’t be it one set of
driver and catalog which can be installed on all windows 8.1 , windows 10
1511, 1607 and 1703 build.

Am i doing something wrong here while submitting the package.