Issue Reversing Planned Delivery Cost

Good afternoon all

We have an issue during reversing a stock transfer shipment with delivery costs, the amount is not the same that was posted into accounting with the original post goods issue, Please could you guide me to find why is that amount being lost?

Example:

This is the original PGI document for one shipment; the first item is the inventory movement at the origin plant (the amount comes from the PO), item 2 is the inventory movement at the destination plant (is the sume of the amount in line 1 + freight costs in line 3 and 4)

This is the reversal of that PGI; the first line the inventory movement at the origin plant (is OK), but item 2 has a different value, because item 3 has changed (why?? no idea):

Thanks in advance!