Congrats 4 PW
Wish I could answer your question . Not sure , but to my understanding the C1 Visa ( even if current and held , is only valid for the company you had previously operated for ) , so you would need a new one anyway. ( So everyone except the Americans would have this problem). I might be wrong , but look into it. parc surely will know.
Another question I have , ( matybe Parc will know). What if your passport is from a Country that requires a visa to enter Japan . Will ANA assist in giving the necessary visa ( or) will someone have to keep coming into the country on a tourist visa each time they go to work ?
Good luck 4PW,s , let me tell you . this is a good move
Cheerds 4G's