I have a problem. I'm not sure what really happen but invoice_partner_bank_id inside my invoices went missing. It was there previously but something happen in the system and it disappeared. And because this field is set to readonly in validated invoices I'm not able to correct that.

I have theory that this particular bank journal was archived and because of that it cleared every field where it was mentioned. I have no idea why that would be the case as other records don't work like that when archiving them.

How do I once again fill that field in validated or paid invoices?

Please help. Using Odoo 13 Community