I completely agree. This is absolutely rubbish. MYOB even has a support page dedicated to this BUG where they recommend we butcher our system and have items for sale that we do not sell!
Rather than giving us poor workarounds, why not just fix your bug so we can use the system as it is intended?
I am also frustrated with the window sizes, which are still problematic. And also column widths and column sorting that do not remember. I am a software developer myself and I would be ashamed of such rubbish performance of an app.