It's obviously wrong. I tested the ACE to see what it would do, and adding 944 KGS, for the ULD weights, and adding 10 of them, I saw what you saw (1942 kg). I changed it to LBS, and the weight changed to 2082 lbs for each ULD, and a total weight of 9443 LBS, which is much closer to what it should have been showing when the settings were for KGS.

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