I will add a Stores_To_Ignore Table to the Project From your attachment
My current thought is to import individual Raw Data Reports, filter them all into the proper Invoice and Return sheets, then adjust those into the final Accounting Reports. IOW, do the whole thing in one Swell Foop.
So far, I have a folder with 35 of your uploads, I am trying to sort thru to filter out what is needed for the Project
Do you have any more Business Rules I need to consider?