How to find an inactive vendor
Once a vendor is made inactive by marking the inactive box at the bottom of the Vendor record in the General Tab, it will no longer display in the Quick Find window. You must instead use the Find Vendor option and mark the box at the bottom left to show inactive vendors. See the screen shots below for the details.
Now that the vendor is inactive, they do not display in the Quick Find window.
Reactivating a Vendor: uncheck the inactive button under the Vendor Information screen and click Submit to make the vendor active again.