Hi All,
We have encountered an issue where a vendor invoice was manually entered (no excel add-in used) and posted through an invoice journal.
Several days later, the same invoice number was used for the same vendor. Rather than throwing any error for reusing a duplicate invoice number, the system found nothing wrong with it.
In the screenshot below, you'll see what looks like identical invoice numbers.

(Ignore the reversal transactions)
However, when I export out these records into excel, I can see that the 12/31 transaction has an additional "-" included in it. For some reason though, this dash is not recognized within Dynamics.

Also, if I go to the original journal that had the 12/31 posted invoice on it, and then open the journal with the excel add-in, the excel cell shows two dashes, but the invoice journal only shows the one:

I'm very confused about how this might've happened, and am looking for an explanation of what would have caused this?
Any information or suggestions would be appreciated. Thank you all in advance!
- David