It would be helpful to associate existing items to an order. Usually, when an order is added to a basket, a new item is created. I would like to have the possibility to "attach" existing items to orders/baskets. Existing information such as price, replacement price, source of acquisition should be used to populate the order. (Motivation: I've started using Koha's Acquisition module in my library only much after using Koha to catalogue records and circulate items. I would like to reconstruct past acquisitions in a consistent way, at least for those items for which acquisition details are available.)