1. YES, 'Subsequent to' mean 'after' . Then, benef's cert should be dated after shipment (IE same shipment date OR after shipment date.)
2. 但若LC requires benef's Cert to certify they have sent documents to applicant SUBSEQUENT TO shipment 'date'. Then, benef's cert should be dated after shipment date (ie . 不可 same shipment date.)
举例
Shipment date = 1 Jan 2012
Issuance date of Certificate of Origin = 4 Jan 2012 (假设 : L/C asked for an original C/O).
就我看来
1. Benef's cert should be dated after shipment.
2. 而且, no conflict with issuance date of other documents.