Hi Gabriela123,
Thank you for your post. There could be several reasons for the sudden appearance of old sales invoices in your account. One possibility could be related to data migration or conversion from another accounting software to MYOB. However, if this doesn't happen, I recommend running the Journal Security Audit report for these transactions to double-check what happened. Alternatively, if you also have a backup file prior to that, you can check that as well.
If neither of these scenarios apply, you may need to visit help sites like myob.com/support or myaccount.myob.com to find MOCA, our virtual assistant. Use MOCA for immediate queries and assistance. If MOCA can't help, you'll be automatically directed to our live chat team.
Otherwise, if my response has answered your inquiry, please click "Accept as Solution" to help other users find this information.
Kind regards,
Shella