This is not the first time we’ve had this case, but it is the first time under tryton.
A works project is underway and has had a couple of monthly advancement invoices made (and paid).
Then an amendment was made to change the company being invoiced (same group, but different entity).
We need to unpay the previously paid invoices in order to reconcile with the complete credit note made for the facturation made but tryton does not let us de-reconcile, saying we cannot modify the invoice because it is posted, paid or cancelled.
It must always be possibile to unpay an invoice, which could always be by error.
How to do this?
BTW, we’re on 5.4