Currently, (depending on the setting in the Settings/Ledger) KMyMoney suggests prior transactions to autofill a new transaction, after entering the Payee.

I find that, for most Payees, I never use the suggestions and click Cancel, but for some I always use the suggestion.  It would be nice to have a setting (ideally on the popup with suggestions, "Never show again for this payee" with a check-box) to hide the suggestions for some, but not all payees. This setting could be shown also under Payees, so that one can re-activate the autofill suggestions.

A second issue with the autofill, unrelated to the above: Under the existing Settings, there is the option to Autofill when the amount is within x% of a previous transaction. But the autofill suggestion window pops up immediately after I enter the Payee, and not after I enter any amount, so I don't understand how this is supposed to work.