For example :
I work with stock that needs to be updated for different teams but I need to cancel out previous stock, some of the stock will remain the same for example tools, but then we have stock with quantities. The previous person handling this did not keep track accurately and I had to add the new stock lists but I need to figure out a way to make sure that the stock that is the same cancels out the duplicate. I'm not sure if that makes sense, thank you