MYOB AR in Brower - Show supplier invoice # when paying bills?

Hi all, trying to force myself to use AR in the browser, after 23 years of using the desktop version.

However when paying bills, it's showing the purchase register number instead of the supplier invoice number.  In the desktop version there was an option to turn on invoice number in the pay bills screen instead of Purchase #.  This makes 2000% more sense, because you want to match against supplier statements etc.

Does anyone know how to make it show supplier invoice number instead?  Seems like an oversight?