Is the field "characters.equipmentCache" in use


sorry for my bad english. I’m searching for the manipulating of the itemEntries in the field equipmentCache of the table characters. I can find in the core reading (SELECT) and writing (UPDATE) the field but i can’t find where the itemEntries are updated. In our DB are some ItemEntry-numbers with reference direct to world.item_template but there are also references to the characters.item_instance, and that for the same item-type. Also there are 2 values for each item. The first is for the item himself but what is the second. It is often 0 but there are also large values, that i can’t find in any other table.

I can’t understand the using of this field and i hope, you can help me to finish my script for the transfers from characters.