Reverting back from 4.6 to 4.2.1

At this point, you can’t just downgrade, you would need to bring up backups from way back when as database architecture changes have been introduced within that version span.

I’d much rather recommend working with MarketPress to resolve the compatibility issues you are experiencing (it might even benefit a larger group of users ?? )

Yes well I’d agree but I wasn’t having much joy going down that route. All recommendations in another post were unsuccessful.

https://www.ads-software.com/support/topic/page-goes-blank-when-you-try-to-mark-a-sale-as-shipped?replies=18#post-8816641