International economy and trade belong to the School of Economics, with only 4+0 and no 2+2.
Business is only 4+0.
It seems quite easy to change from 4+0 to 2+2 in engineering. 2+2 to 4+0 is more difficult.
However, even if it is not 2+2, it can still be exchanged. Anglo-American law can go for a year or half a year.