The game rom name issue has been resolved. It was a configuration problem.
I have another problem with AdvanceMENU: I can select and start a rom from AdvanceMENU and Groovymame.exe will pick it up and start it correctly BUT it starts in a mode where it doesn't activate SwitchRes modeline generator which is incorporated (merged) with groovymame.exe
The exactly same also happens with Emu Loader when groovymame.exe is called from external application.
Is there an issue with groovy mame, switchres and frontends like AdvanceMAME and EmuLoader?