The current invoice #s in my Quickbooks Online account are 

1,2,3,4,5 all the way to 11

After that I have invoices that start at around 1500 and go up to 1620

The next time I create an invoice, I want the invoice # to be 1621 but QB automatically sets it to 1 above the lower #s, in this case 12.

I enabled custom transaction #s and the manually changed the invoice # 12 to 1621. I then created a new invoice and the new invoice # that gets created is #13 which I then need to manually change to 1622. I also tried changing the latest invoice # to 1622, saving it, turning off custom transaction #s and then copying that invoice and the next invoice # that gets created is 14 and not 1623.

I checked the community discussions and also deleted my browser cache, deleting cookies, tried 2 different browsers (Brave and Chrome) and nothing seems to work.

Is there any way to tell Quickbooks that I want all subsequent invoice #s to start with the number 1621 or 1622 or do I have to keep manually adjusting them? I've never had to do this before with Quickbooks. As a side note, I had this issue arise after creating an invoice in Quickbooks using a third party time tracking app. I always seem to have that issue when I create an invoice from a third party app such as proposal apps like proposify, harvest time tracking, etc... It always seems to mess up the invoice numbering such that it restarts the numbering from the bottom. I no longer use these apps to create invoices in Quickbooks because of this issue but just want to share the background.

I would really appreciate any guidance on how to resolve this.

Thanks!