Modifying BRNT1EXART (Lumberjack artillery) Thread - Total Mayhem mod for Supreme Commander: Forged Alliance

I'm learning how to modify the weapons in Forged Alliance and the Mayhem mod.

I thought it would be nice to triple the default range of the Tech 1 Lumberjack experimental artillery. So using Powergrep and searching for 'lumberjack' I found out that the unit is defined in the BRNT1EXART folder in a file called BRNT1EXART_unit.bp. Changing the weapons default range value (maxradius) and the velocity (muzzle velocity) however does not work as it is supposed to. In fact, removing the entire BRNT1EXART folder from the Forge Alliance folder and re-booting the PC has no effect on the weapon. It still shows up in the game. What am I doing wrong? Is this a bug? Thanks.

By the way, I'm using ver 1.5.3599 and following mods:
Bulwark mod
GAZ_UI
Black Ops Icon Support v.2
Sorian
and of course Mayhem 1.16 (see my other post here in this forum for why I'm still using v1.16 when v1.17 is already available).