I would say yes it can be,but I don't know of any U.S.Veterans that has claims from Japan for A.O.?
check this link out ''Interesting''
I don't blame you for wanting to work if your still a young age, What you might try to do is Tell them you don't want the IU With P&T Request them rate your current S.C. Disability's according to the highest rates by law, if it comes out to 100% then you get paid at the 100%rate without being IU.
But they will probably under rate you to 60%.70% that's a lot of $$ to give up but you also take a chance on them rating you 100%
Look up the rating criteria from your disability's and see what you should be rated at?
under which tab would that be located? Ebenefits does not even show this claim in the archives or anything yet. The only way I knew was because i checked my bank account and saw the pending backpay deposit and then ebenefits shows that I am at a combined 100%.
They also awarded me with SMC-S. Not sure what it is because I am still awaiting the letter but Yay....I guess!