I have this sales order that was created in reference to another order and the conversion factors came as "0". Both fields UMVKN and UMVKZ are empty.

On the original order, they are fine.
If I change the UoM and then put it back to KG, then the values get automatically populated as expected.

I thought this might have to do with copy control but we are using standard order type OR to OR, with it.Cat TAN.
Any ideas on why this might be happening?