Manage Print Invoice with VAT-eBay seller hub

[moto_supply]

Hi, Been doing this awhile but one issue I need help on please.  In  "Manage Print Invoice with VAT-eBay seller hub"  it shows "Suggested invoice number XXXXXX edit number scheme".  

1. I want to edit this to put it in line with "Sales Record" (was a private account prior to business)
2. If done individually it works
3. If done with several invoices it puts the edited number backwards (last invoice number on 1st sheet)
4. I cannot do individual invoices as I have too many

This is driving me mad, can anyone figure out how to correct it?

Geoff