If there is no product defined on the project, the call to on_change_product for the invoice line does not set the account field. Closes #13111 (grafted from 01992016f36efdf8576a2453a084ba642e43d74f) --HG-- branch : 7.0
Project Invoice Module ###################### The Project Invoice module adds invoice methods on project. The methods are: - Manual: Tryton doesn't create any invoice. - On Effort: The invoices are created based on the *Effort* hours for all children works with 100% progress. - On Progress: The invoices are create proportionally to the *Progress* of the *Effort* hours of each children work. - On Timesheet: The invoices are created based on the timesheets encoded on all children works.