I modified my standard invoice template (general conditions) and that modified all previously sent invoices.
Therefore when I look at a previous invoice, it is not the same as what the client received anymore!!
This leads to client conflicts.
And my accountant warns me that it's a true legal risk, not to be able to accurately keep the exact sent invoices.
In 2 innocent click, any of my assistants can break the accuracy of all previous invoices...
Sent invoices should not be modifiable anymore, even if templates are modified.
Please :-)