Dear all, I am having an Excel issue that I am trying to solve for quite long. I have items that I sell on a regular bases. At one time, that item is replaced with another one. My challenge is to transfer sold quantities to substitute item, together with qty sold of the original item. The most challenging are the duplicates, meaning that one item can be replaced by two same items. Just to mention, there are more than 190.000 items that might be replaced anytime, so I would like to make this as automatic as possible. Thanks in advance. Attached is an example of what I am trying to accomplish.
Excel replacement issue.PNG
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