IndustrialGateway (For Thingworx 8.2) not showing System tags of a channel (KepServer).

Hi Guys, 

I have connected KepServer (version 6.2.4620) and Thingworx (version 8.2.5) through IndustrialGateway, whenever I go to the "New Composer" and try to browse the tags from KepServer. I cannot see the channel "_System" tags. But these "
_System" tags are visible in Thingworx (version 7.4) "New Composer". Below are the screen shot for your reference. Could any one has a perfect solution for this? Please help.

Thingworx "New Composer" - version 7.4 - _System tag available.

Thingworx "New Composer" -version 8.2 - _System tag not available