Can you simply pay the $0 invoice, which will make it go away, and then make the vendor inactive?

You can change the date of the invoice to the correct date.  That will at least allow it to show correctly.  Then pay it with a zero check on 1/1/22.  That should clear it completely.

I dont see where it lets me pay it with a $0 check? are you referring paying it through the "select invoices to pay" screen?

Yes, you can select the vendor, pay 0, save then go to Pay Vendors (4-3-2) select vendor, click pay vendors, then on next screen click print $0 Checks.  That should print out voided check and clear the invoice. 

I guess when i was in that screen last week it wouldnt exactly let me input a $0 and show "0.00" in amount to be paid. But i never tried to move on to the next screen with it.

I tried various things last week to fix the issue, but what i am running into now, is the invoice does not show in the "select invoices to be paid" screen. However, it shows under the vendors > Open invoices screen. So it is still an open invoice but is not showing anymore?

So in the invoice itself mark status as paid.  I would still change the invoice date to the correct date. Save with correct date and then change status to paid and save.

It does not give me the option to change it to paid status.... just 1,2,3, (Open, Review, Dispute)

I can not save an invoice as zero! Do you have both exclusive rights and Administrator rights?

I do not know exactly how the invoice ended up as a $0 invoice but i do know it was pushed from Sage Paperless. I can try to re-test and see if it will let you send a $0 invoice to Sage. This would have been input by someone other than me so I cant say for sure how it ended up a $0 invoice.

What version of Sage or Paperless are you running?  There was a known issue about a year ago that was resolved with updates.   But it said if you had issues to Contact SAGE for a data repair