You can set the option to allow QuickBooks or MYOB to use the next sequential transaction reference number, Axis will still group rows together according to the mapped transaction reference number but will use the next sequential reference number available in QuickBooks or MYOB, based on the last number that was used.  If this option is not set then the imported reference number will be used.  In QuickBooks duplicate reference numbers are permitted.

To set this option on:

1. Make sure you are connected to your QuickBooks or MYOB company file
2. In Axis open the import tab.
3. In the Import Options section check the option for Use auto numbering