Account Payment Details; Updated Zepto (Split Payments) logic

The Account Payment Details data entry for Zepto (Split Payments) has been updated.

To help prevent getting into a scenario where the Bank Account details do no match the Zepto Contact, the Contact Id is now blanked if the Account BSB, Number, Name or Email are changed.

This change applies to Account Payment Details, Disbursements as well as Transaction Entry like Payments and Withdrawals.