I'm trying to change my category codes for inventory items from one category to the another. I thought toolkit would work best since i have several thousand inventory items to change and made an import file and I'd like this month's history to show under the right category code. However, when I try to use toolkit it states i have to have a different source code or in other words my inventory codes can't be the same one. (for example, i can't say combine, change or copy 20widgets category 02 to 20widgets category 20)

I'm assuming i can change it in the inventory module but i want the history to show under the right category.

Any suggestions would be appreciate to easily accomplish my task.
thanks
Treasure