I think it would be great to have a better workflow for managing Orders and Delivery Notes. An accepted invoice should be able to convert to an Order. A Order confirmation can be send to the customer. In some places it is a legal issue If no confirmation us send. With orders it should be easily distinguishable between a Quote and an Order. Furthermore, it would be beneficial to be able to convert an Order to a Ticket, so the Ticket is logically bound to the Order and a customer can see when a Ticket belongs to an Order. This is especially good for accounting on the customer side.
Additionally, the Order positions should convert to the Ticket. The descriptions are important for technicians to know what to do, without having to manually copy and paste to a Ticket. It would be good to choose which positions to convert so that only the Texts for the Services are included and no Hardware etc. positions. These hardware positions should convert to a Delivery Note instead.
At the end of this workflow, we would be able to invoice delivered Hardware, licenses, or Software directly, and invoice the Labor at a later point, because in real life it happens frequently that labor gets completed later.