I have a DD4T based website in Tridion 2011 SP1 using XPM.
When I update any content and click update preview it sometimes updates the preview with the new content and sometimes doesn't. Also it is showing the old contents in other edited regions after clicking U.P. which I had added yesterday. Please suggest.
Earlier the preview was not at all working but after moving the ambient from
<modules> in web.config fixed but seems it's not behaving perfectly.
I have checked the CP table in session preview db, the contents are getting added and cleared after exiting.