When can U.S. grain move through Canada without any need for CFIA involvement in issuing a phytosanitary certificate?

If grain is admitted into Canada as an “in-transit” shipment, then the grain is not eligible for a Canadian phytosanitary certificate, and all the requirements of the importing country must be met by the original phytosanitary certificate (if any is required) issued by US-APHIS.  If grain is imported into Canada with a US-APHIS phytosanitary certificate to the importing country, and identity is preserved without commingling, no Canadian phytosanitary certificate is necessary.