AUSST Filter not working as expected

AUSST filters seem to only work if they don't get changed between "AUSST.exe --fresh" runs.

If I find I need to add something to the group, an AUSST.exe --incremental lists the new items in the group, but does not seem to actually process them.

If I run AUSST with --fresh it seems to update the group - but i'm trying to avoid downloading 100Gb all over agian if i can help it!