Batch converting old freeform contacts on payments and receipts

[Patch]

@dalacor

Also would it be possible to have bank rules include an option to select default customer/supplier as this would make bank importing perfect as result.

I think that is in this ideas thread

Bank Rules Contacts Field Feature Request

When you create a bank rule, there is no contacts field where you can put in Supplier or Client. Given that almost all (if not all) bank rules will be applied to the same supplier or client, it would make sense to include this so that when looking at the Receipts and Payments Tab, the contacts field is automatically filled.