Update of XPage after redirect

I have some code in an XPages app that is purely used in the Notes client

I have a link control that takes the user to another location using the Notes URL

var dest:String="notes://"+strServer+"/"+strPath+"/0/"+artTaskUNID

var extCont:javax.faces.context.ExternalContext = facesContext.getExternalContext();

extCont.redirect(dest.toString());

The code works fine only if I have “Full update” as the setting on the server options. The new location is launched in a new tab on the Notes client but my XPage is now blank (as it presumably has been “submitted”)

As a newbie to XPages, what am I doing wrong? I have set my navigation settings on my XPage to “Same page” on success - I know I’m missing something simple

TIA

Mike