Ack your message and understand your suspect on the fight/date of misloading. However, I called the PEK GHA handling international IRP section which sent us the telex on 12APR already, that information based on PEK GHA inbound section, I called them also. But currently their record is TG614/08APR.
I would ask for PEK GHA double check their history original records but due to date and volume of documents everyday of many inbound flights they are handling, a lot of paper work. I will try to get help from PEK GHA and revert to you if any news, it might take days.