ok, it says -1 in the ini file, but -1 goes to 0 and -2 goes to 1 in gt3gedit so to get -1 you use 0. in that case you were right: it is 0 in the ini file but i thought you meant the FFFF FFFF value you get in gt3gedit (if gt3 uses hexadecimal then FFFF FFFF is actually 4294967295. the largest 8 digit hex number.)
ah yes when 488=0 dirtyness goes to 0000 0000. all is clear now.
it seems negative and positive decimal integers in the ini file convert to positive hexadecimal integers in gt3gedit. so you can't have dirtyness set to numbers below 0.