I beleive if you tell it to save as it will build a preset line like this, and add it to the user.ini file.
So it is then saved added extra lines without mixing into the default arrangement.
beltPreset "Toad Tracer" _Gun03 Gun.Browning303MkII MainBelt 11
beltPreset "Toad Tracer" _Gun06 Gun.Browning303MkII MainBelt 11
beltPreset "Toad Tracer" _Gun00 Gun.Browning303MkII MainBelt 3 9
beltPreset "Toad Tracer" _Gun01 Gun.Browning303MkII MainBelt 11
beltPreset "Toad Tracer" _Gun07 Gun.Browning303MkII MainBelt 9 4
beltPreset "Toad Tracer" _Gun02 Gun.Browning303MkII MainBelt 9
beltPreset "Toad Tracer" _Gun05 Gun.Browning303MkII MainBelt 9
beltPreset "Toad Tracer" _Gun04 Gun.Browning303MkII MainBelt 11