Problem to enable change in password reset mail

[Otabutin]

Hello,
I have changed the body text of the NotificationBodyLostPasswordToken parameters.
But the reset password mail created remains the same although the ZZZAAuto.pm file has been updated , the application cache cleared, the application service restarted, and the web service restarted.
It seems that the values updated via sysconfig page or imported (after export) by pm file are never taken into account.
I fear I have the problem with other options customised.

How can I ensure that the ZZZAAuto.pm config file is well loaded as application parameters with all the changes enabled ?

Thanks for your help,

Olivier