A method of processing items such as pieces of meat, by providing a stream of items by means of a primary conveyor means, allocating at least partly by means of a computer system one or more of said items to one of at least two workstations where said items are processed, e.g. cut and/or trimmed, resulting in one or more processed items, registering in said computer system information about a return of at least one of said one or more processed items to said primary conveyor means, and returning said at least one of said one or more processed items to said primary conveyor means in accordance with said information about a return, wherein the method further comprises keeping track of said items including when they are taken out and put back on the primary conveyor. The invention further relates to a processing system for carrying out the method.