It shouldn't be. From what I have been told, once you arrive, you cannot actually leave of your own doing. I'm not sure how else it happens...but sometimes people just go back.

For now, however, you are here.

[It was admittedly difficult for Kara to wrap his head around at first as well. He was under the impression his brothers were right there with him but, well. He hasn't seen any of his siblings in days. It's probably the longest they've been apart, now that he thinks about it.]