Method to "Reopen" deleted vouchers

At the end of a fiscal year, our AP team deletes all unposted vouchers. Once the new year begins, they will recreate these vouchers as needed. This is all done manually right now. We are researching methods to automate this process.

We have done some testing on Voucher Mass Maintenance and found that this is a good solution for deleting the vouchers. The question now is how to recreate them.

Has anyone done anything like this with SQL or possibly even a Page or AE?

I've done some research into the fs_streamln process that deletes vouchers in order to reverse-engineer it. I have found that it is pretty involved, although I can see some of the updates are not needed for our scenario. I don't want to go too far down that path before asking what others may have done.