Comment 3 for bug 607499

OK, I found how to reproduce it:

In web client
In Financial management->Invoices->supplier invoices
- Create new invoice.
- Choose partner that has 2 addresses, the first address is filled by default
- Change the partner address to the second address
- Write 1234 in "Total" field
- Click validate
- an error is raised, becouse the total does not match the sum of the invoice lines
- click ok to go back to the form
- Voila! the partner addres is automatically set to the default one. This involves also the financial account and you won't even notice it when changing the total field and validate once more. You end up with a wrong validated invoice. This might create a REALLY BIG MESS in the company.