Is ektron regex aliasing change the case of matched group

Question

The url I typed in the browser is like host/en-in/study/subject- abCD - efGh

I have a regular expression in ektron regex aliasing like

host/en-in/study/(.*(.*-([\w_]*)-))([\w_]*)

and the mapped url is like below

host/ektron_page_path/?pageid=10&subjectid=$3&courseid=$4

The values corresponding to $3 and $4 are abCD and efGh

Then the resultant url will be like below

host/ektron_page_path/?pageid=10&subjectid=abCD&courseid=efGh

My problem is that the query string changed like below when I tried to get them same via using Request.Querystring.Tostring()

host/ektron_page_path/?pageid=10&subjectid= abcd &courseid= efgh

The case of query string changed to lowercase (abCD to abcd and efGh to efgh) For fetching the next data query string values to be case sensitive (abCD fetch the data but abcd not)

Answer 1

I had some email conversation with Episerver support. It was an issue which solved in the ektron 9.1 SP3 Update 8 (June 17, 2016 issue:24315 )