User475983607 posted
i want to move the entire concern that the main site focusses on into another folder than the management or analytics parts focusses on.
now i need to reroute the default document to a subfolder. so that domain "~/" requests refer to "~\folder\default.aspx
The question is not totally clear.
Issue a redirect in the root default.aspx code behind on Page_Load.
Response.Redirect("~/folder/default.aspx");
If you are using routes in Web Forms, see the docs.
https://msdn.microsoft.com/en-us/library/dd329551.aspx