I modified a file but NetFinder doesn upload it?!?
You probably have the Mirror Item’s ‘Mirror By’ option set to ‘Name Only’. You need to make it ‘Name And Size’. Note that if you modify a file but the size of its data fork does not change, then NetFinder will not be able to detect that it has changed and will not upload it, so you will have to use the next option up, namely mirror by “Name Size and Modified Date”.