RUM: View and ungroup query string parameters

We have both ASP.NET MVC and traditional ASP.NET web applications.

For MVC I can group/ungroup parameters sent as url segments using the grouping rules, but I can't see a way to do this for .aspx pages to which an id and other parameters are passed as query string parameter. Is this possible?

I generally can't see the query string parameters e.g. in the session timeline and clicking on the link at the top right of an entry opens the page without parameters (which usually results in an error).

Load behaviour might differ quite substantially in our cases depending on what id is requested. It would be good to see this ungrouped for this reason alone. It would also be good to see what users looked at.

How can I enable this?

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