10 Common Mail Merge Problems in Microsoft Word - Burris ... Aug 03, 2018 · Having blank lines in your Excel file can mess up your mail merge. If you need to leave the spaces in your Excel file, you can just tell Microsoft Word to ignore those blank rows. Go to Edit Recipient List and uncheck the blank rows. This will tell Word to ignore those blank rows in Excel. 7. Mail Merge Is Skipping Some Records