1, yes, you have to pay two handling fees and bear the expenses in Japan. This is the general law at present, and there is no way. On the contrary, if you remit money from Japan to China, you only need to pay one share, and the domestic part can be saved.
Your calculation is correct.
3, there is no way to recover. Unless you ask your relatives and friends in Japan to give it to you, and then you bring them cash.
-Non-experts