In building the tool, I had originally hoped to find matching credit card transactions and expand them into their line items. Ultimately, limitations in Amazon’s data set presented too many challenges to do that properly. So I simplified the approach to add in the offsets which is fairly accurate in most cases.
Your manual Amazon account approach is interesting. Do you find the existing workflow is compatible (i.e. with minor manual cleanup)?
Thanks for the feedback, @mark.chien.
Randy