..Yeah I went to Nepal last year Spring '08 and I came back after one and half month. After that I took one class in Summer 08. I think you need to take a class in summer to be in status. But I don't think you have to take 24 hrs in 1 year to be in status. I hope this helps. And yeah my friend did the same thing. He went Nepal this spring and He is  taking class in summer...

Good Luck and Take Care....