Thanks for your input. I found an Airbus document regarding loading and W&B matters that deals with Operational Limits as part of the document, but that is way beyond the scope of what I am trying to achieve.
I'll have to reverse engineer the original loadsheet like you suggested. Shouldn't be too difficult, but won't be 100% accurate either. More than good enough for a gross error check of the manual loadsheet though.
Regards,
Prop Job