Guys: My I-485 is pending and I am right now with f1 status. My visa is already expire. I need to go to Nepal on Dec cause of iimportant circumstance. Do you think getting advance parole is safe to travel? if I get travel  document, do I need to apply for f1 visa again. If I apply for f1 visa and didn't get one, can I come back with travel document or advanced parole? Please give me some ideas...