Hi Khrys
I don't think you are explaining this properly.
It doesn't matter if the checks were printed or not, it only matters if you entered them into a manual check batch. If you did, then you can and should reverse them.
If you didn't enter the checks into a manual check batch, then the vendors will have an outstanding balance and you can simply pay the invoices.
Maybe you will want to show us a screenshot of a vendor's transactions so we can see what you did, and whether the vendor has an outstanding balance.
In any case, you can't pull an AP batch back from the GL.
Steve