I have worked in both NATIVE systems and GUIs for load control and i honestly prefer the native system. it gives a real feel for having to build flights from scratch and watching it run to the end. its more of a challenge. i presently work in Sabre Steadystate (Load Manager) and i am versed enough that i can build a flight in the load control system start to finish in 5 minutes. (this is on a good day). there is no challenge in that. Yes BA RTZ (Winbabs) and Codeco are built on the same infrastructure. entries are the same. only thing one system was built and maintained by BA and the other by KLM. there was a release on the KLM site that said they would stop supporting Codeco as they would be moving onto Amadeus Altea and that they would not leave their DCS customers in the dark as they would work with them to also make the move to Altea.