Processing a number of payments from 1 supplier; each item must go to a different cat'. However when I select a cat' for the first entry, all following entries change?

Hello iain4,

Welcome to the Community page,

 It is possible that you have toggled on the auto-filled option in the settings. To double check this if you go to main cog wheel> account and settings> advanced> automation> pre-fill forms with previously entered content> toggle this off>save>done this should then resolve the issue you have been having.