john-pero
Community Champion

Reports and accounting

Multi currency could result in different currency transactions between the two vendors you wish to merge.

 Brute force method. Go into actual transactions of the vendor with the least number. Edit each to new vendor. It might get sticky with bills and bill payment applications, but that is what it is. Once you get to point where vendor has zero transactions you can delete it or merge or rename and make inactive. Then you are left with just the one vendor