I use "non accounting savvy staff" to do our Bank Feeds. So I have set up a number of CARDS they can use to get the right G/L account selected when doing a Spend / Receive Money. The CARD name includes the text that appears in the Bank Feed and the Income / Expense Account is preset. ( eg EXP GIT HUB is set to 6-1230 R&D ).
Worked great until I realised "Use Suppliers Tax Code" is ignored 
So now my CARDS all include the TAX to use ( eg EXP GIT HUB (N-T) ).
Works great, provided htey make sure the Tax Rate in the CARD Name matches the Spend Money Tax Rate
BUT ...
If they change the Tax to match, MYOB will automatically add a second transaction line which then gets turned into a VOID in the G/L
How do I prevent getting a VOID for every single bank feed transaction across the multiple bank feeds i use ?
Did I mention I am slightly OCD and all those VOIDS will be worse than the volume control being set to an odd number ?