Hello~I already reserved tickets online from highwaybus for 7000 yen. After i wanted to change th...

Hello~I already reserved tickets online from highwaybus for 7000 yen. After i wanted to change the tickets schedule , but i didn't cancel the first time tickets then i booked the second time tickets...
Is there have two orders for this?
I only can see the second time tickets data and canceled it, but still can't see the first time tickets. How can i cancel the first order? Can I know the first order exist or be replaced ?
The attached image is my first time order, can you help to check? Thanks