The SQF Code Edition 8 requires:
188.8.131.52 Product start up and changeover procedures during packing shall be documented and implemented to ensure that the correct product is in the correct package and with the correct label, and that the changeover is inspected and approved by an authorized person.
This process would normally involve the removal of packaged products and packaging, then the introduction of the new packaging and product with a start up check. My procedure would require clearance from QA on the first product off prior to starting production. QA checks include confirmation the product meets specification and verification of printed information where appropriate including Date coding, Batch coding, Label, Quantity declared, Bar code etc. Start ups would be also signed off by a Supervisor.
Your checklist should reflect your procedure.