Why does the system allow a propal to be invoiced many times?
Even, why does it allow propals to be invoiced? It should only allow orders to be invoiced. An propal should be converted into a order before to allow creating an invoice.
If you bill several times an propal, you are billing the same number of propal several times… and it permits even to create an order from that propal an invoice it again.
I’ts a bug or a feature?
