I have seen the file modified time change when I load the airplane.
When I load the airplane it rewrites the cargo loader option.
[cargo1]
pos = 0.96 6.28 -2.13 0.00
code = (L:FSLA320_upper_cargo_door, number) 2900 >=
name = Upper Cargo Door
embeddedStair = 0
uldcode = BELT
[cargo2]
pos = 0.94 -8.14 -2.13 0.00
code = (L:FSLA320_lower_cargo_door, number) 2900 >=
name = Lower Cargo Door
embeddedStair = 0
uldcode = BELT