Missing old invoices

Hi there, plfarrell.

You can restore the backup company file to check your old invoices.

Here's how:

1. Go to the File menu, and click Open or Restore Company.
2. Click Restore a backup copy, then Next.
3. Choose Local Backup, then Next.
4. In the Look In drop-down, choose the location of the backup file.
5. Click the backup file from the folder. 
6. Select Open, then Next.
7. In the Save In drop-down, choose the location where you want to save the restored file.
8. In the File name field, type a new file name. 
9. Click Save, then read and respond to a message that appear before restoration begins.

For more details, you can check this article: Restore a Backup Company File.

Let me know if you have any other concerns. Have a great day!