Last touch channel and First touch channel data is going in wrong bucket

Hi Team,

I have created 5 marketing channels namely - Display, Email, Paid Social, Natural Search and Direct.

Created corresponding processing rule for each channel but my data is going in two catgories only - first in Direct and second in None.

Display, Email and Paid channel data is captured through query string parameter from the url when visitor land on the home page. And have set channels data value to query string parameter for all the above three with thier corresponding unique parameters.

Irony is when i am storing campaign value in a sepearte eVar (using Launch) and then assigning back this eVar value in marketing channel processign rules in place of query string parameter - everything is working fine, data in buckets in collecting perfectly also last touch and first touch report is coming correct.

Issue is only when i am using query string parameter in rule and channel's value. Can some solve this problem.

Thanks.