You don't want to mess with MRHsession cookie if you can help it. This cookie is present in the requests even if you open multiple tabs, as long as the URLs in those tabs use the same host name, and if you enable domain cookie in the policy, only the domain name has to match.
in other words, tab1=https://www.company.com/uri1, tab2=https://www.company.com/uri2
if domain cookie enabled, and the domain=".company.com" specified, this will work: tab1=https://www.company.com/uri1, tab2=https://www2.company.com/uri2
What is the error you are getting?
Send examples of the various URLs that you are using.
Send more information about how you are redirecting the requests.
When you say , only the first URL works, do all URLs work if tried first?
HTH
Nimbostratus
