MAME "TAB" button lost

[mjh]

Hi,
somehow messed my input settings & now during game I can´t access input settings pushing "TAB" button as usual.

Using the latest stabile Recalbox version.
Any advice, how to solve.

Wouldn´t like to make a full re-install, because all the rest settings in my setup are finally ok.

[acris]

/saves/mame/cfg

[mjh]

Was able to find:
\recalbox\share\saves\mame\mame2003\cfg

But there is confiqs for each game by game. I am missing "TAB" in all the games...

[acris]

delete default.cfg