What will you be doing overseas, since it sounds like it's just a semester? If you chose that semester for studying abroad, that was a very poor choice.
When you get an interview invite, you can try contacting the school and explaining your situation to see if they can give you an interview date when it works for you. I ran into a couple people along the interview trail who had to do something similar (schedule all interviews within a few weeks of each other) and many schools seemed amenable to it.