SJ, on behalf of the rest of the KA skippers I apologize for your J1 to J4 deterioration. That's amateurish, unprofessional and infantile behavior by whomever it was. When someone is provided with J1 they bloody rely on it and it's very frustrating to have it changed. I had the same thing happen to me recently on CX. Was very kindly given J2 for a return flight to HK (which can be relied upon at outports) and a week before travel changed to J3. Then on the day of travel I happened to check it again and discovered it was now J4. Caused a bit of panicking 'plan C' action. If a captain chooses to save J1 and J2 for his own colleagues I fully understand but if he's allocated J1 and J2 I think it's poor form to screw with the applicant who's now got a travel insurance policy in place.