I've just submitted v1.5.0 of the Database I/O Manager to the Zen Cart plugins for review and will post back here once it's available.

This release contains the changes associated with the following GitHub issues:

#117: Correct multi-language customized "Products" export field-ordering.
#118: Add customers' default address information to the "Customers" export.
#119: Add a handler to import/export the "Products Discount Quantity" information.
#120: Correct exports for handlers that support a 'dbio_command'.