OK after some testing it seems this is a defect in that it works for top level views but fails to show NV data for views reached via a drill down.
the work around is to manually edit the URL before sending it to the end user.
Get the URL from the report page showing the view you want to generate the URL for.
/localhost/npc/Default.aspx?pg=i&InterfaceID=282107
Generate the view for the View.
This shows the section of the URL to be changed.
.../npc/View.aspx?Integration=1&TimeSpan=...
Insert the interface ID section like this:
.../npc/View.aspx?Integration=1&InterfaceID=282107&TimeSpan=...
Provide that modified URL to your end user. At least this will work for now until the defect is corrected.