Hello everyone.

I was lucky to win one of the 'world of winners' tickets to HKG earlier in the year but plans have changed so i'm going to meet up with family in Japan instead.

The winning ticket came with 2 pieces of luggage included,
I've booked a separate flight to Japan with HK Express and then i booked a reward flight with avios on the return. ( no avios flights available for the entire return trip)
So, can I have Cathay interline 1 suitcase from Japan, i will then meet up with relatives in HKG, do some shopping and then check in another suitcase when i return to the airport?
Or will this mess up and confuse the system?

Thanks in advance