ah that explains it, i would only notice the outbound, the only major inbound i recall this summer was from FAO, 63 bags offloaded in FAO as a 64T(i think) was used when the original aircraft went tech in BFS which resulted in 34 bags offloaded on the outbound that evening, although that was because 200kgs extra of fuel was accidently put on..
hopefully they can figure something out for the BFS-MLA, would be a shame if the first new route in awhile is plagued with weight issues on full loads