Solved
Desktop invoice template inexplicably changed after Online activity
I have had the same customised invoice template in Desktop for years. I created a new template with a different name in MYOB Online while trying to integrate with Amaka, which didn't work. I couldn...
Yes learnt that now thanks Sai - however, the MYOB Online Sales Settings UI info implies you can use the Desktop templates, as per screenshot below. To get around the emailing-from-MYOB issue above, I had to delete the Desktop Invoice template from Online Invoice templates.
