Using version 8.0.2 when you pay an existing invoice (paiement module), the header information get lost from the generated pdf documents. If you, then, print the invoice you do not have the recipient information printed. You have to [re]generate again the documents (odt, pdf) by hand in the billing (facture) module to get the full recipient information back.
Looks like paying an invoice forces the [re]generation of the related documents again from some code that has no access (or that does not read) the related data of the invoicee so those header fields are written empty.
Though you can get those data back by generating the invoice again by hand from the invoices module this is a big pain in the ass and you, normaly, notice the problem when it is late and you have already printed the modified, and void, invoices with a big waste in paper.
Looks like paying an invoice forces the [re]generation of the related documents again from some code that has no access (or that does not read) the related data of the invoicee so those header fields are written empty.
Though you can get those data back by generating the invoice again by hand from the invoices module this is a big pain in the ass and you, normaly, notice the problem when it is late and you have already printed the modified, and void, invoices with a big waste in paper.