Hi PartTimer,
Sorry to intrude but there shud be much difference btw manual and automated. If there is a BIG difference then either the manual is done wrongly or the data for the autmated system is wrong somewhere. Load Masters or Weight & Balance officers first of all needs to be train manually for the Loadsheet. This will give them the neccessary fundamental/basis of basic aircraft planning. Once the know how to 'do' or complete the manual then thats where the automated will comes in. Automated basically helps the 'loadsheeter' to perform faster and more efficiently if there is any changes to the planning/loading/weights like passengers/cargo/baggages/fuel..etc etc. But hey I'm not a pro in this matter, lol.