Yes, it's called session recovery, and it works server wide, meaning that either or the users have it enabled or none of them. To enable or disable it go to the QlikView Enterprise Management Console, System, Setup, QlikView Servers, expand and click on yours, Documents, "Prohibit Session Recovery".
What QlikView does in the background is to save a bookmark with the values of fields, layout and variables. This bookmark can be deleted manually in the QEMC, Documents, expand your server and click on the document, and go to the Server Objects tab. Remove all the bookmars you see there.
Hope that helps.