All vendors created prior to the 12.80 update have the default 1099 box set to 0-None.  In order to mass change them to another number, follow these steps:
  1. Go to Tools>System Utilities>Admin Utilities>Global Change Program
  2. In the top field, select Grantee
  3. In the middle field, select DefaultBox1099
  4. Leave Old Value blank, and in New Value enter the number of the 1099 box you wish to set as the default for all vendors prior to 12.80
  5. In the bottom field, select Flag-1099 - 1099
  6. Enter Yes into both the From and To fields

This is a global change and cannot be undone.  Please test in your Test & Learn database first, verify results, and then proceed in your Live database. If you have any questions or need assistance, please contact Blackbaud Support.