Sales journal import - duplicates on import

Solved

Any thoughts why my sales journal import duplicates on import? No error messages or issues with importing - it just creates a copy of the invoice I imported.

I am using the following import fields:

1. Customer ID - same all the way down

2. Date - same all the way down

3. Due Date - same all the way down

4. Accounts Receivable Account - same all the way down

5. Number of Distributions (number of rows in .csv file less 1 for header row)

6. Invoice/CM Distribution (sequentially numbered down the rows 0, 1, 2, etc. - first non-header row with the 0 is a tax type 0 with amount 0 which I included because my initial export file had it)

7.  Serial Number (left blank - required per "Sales Journal Fields (Import/Export)" article)

8. G/L Account (no comments)

9. Tax Type - 0 for the first row, 2 the rest of the way down for no tax (see point 6)

10. Amount (no comments)

11. Sales Tax Agency ID (left blank, except for first row - see point 6.)

12. Voided by Transaction (left blank - not needed, yet required per "Sales Journal Fields (Import/Export)" article

13. Recur Number - 0 all the way down

14. Recur Frequency - 0 all the way down

In the meantime, I just delete one of the copies, but I'd like to fix the root problem.