invoices reached 1000, no longer in order

invoices reached 1000, no longer in order

So, we reached 1000 with our invoice numbers and now any new invoices 1000+ are going to the bottom of the invoice list. i sort them by the invoice number so this is a very big inconvenience. and the invoices aren't actually going right to the bottom of the list because we originally imported invoices we had from our old system which were numbered 00300, 00301, 00302 etc... so our 1000+ invoices are stuck in between those old invoices and the start of our invoices in this system.