Merging vendors deletes one vendor and transfer the data to the other vendors. While merging two vendors in QuickBooks, you need to be careful as the process cannot be undone. Create a backup of your company file before getting started with the merging process. Besides, you need to ensure that the Accountant’s Copy File (.QBA) is not used when you merge vendors in QuickBooks. For more info on how to merge vendors in QuickBooks, follow the article until the end. For technical assistance reach QuickBooks Support at (844)-932-1139.