Which iFix 4.0 Layout is being used?

iFix 4.0 with Desktop;
I'm working on SCADAs for a company that has several different layout files (*.lyt). I want to go into each of the SCADAs and determine which *.lyt file is being used. These SCADAs don't have configuration keys. Can I find this info in one of the *.ini files?

Thanks.