I found the problem. EL is setting "driver status" to -1 which is "undefined" in EL's internal code, that's why Supermodel games are not properly filtered when using a driver status filter other than "List All".
Even after the fix, the only way to properly filter Supermodel games is to re-create its games list in EL.
Thanks for this bug report. There was another tiny bug in EL's code preventing proper Supermodel filtering in a couple games filter configurations.
Ciro Alfredo Consentino
EmuCon Home: http://emuloader.mameworld.info/emucon
MCM Plus: http://mcm.mameworld.info