Importing Invoices - Orignal Invoice# not carried through

HI,
I’ve imported my invoices to Version 7.9.12. I noticed that the original invoice # are not being transferred. Even though they exist within the original invoices.csv file. I’ve looked at the database table aos_invoices and they are not a key field. Also, I’ve checked the field mappings in the import program and they seem fine.

Any ideas?

Thanks, Scott