When I got back on some worlds, they sent me to spawn.

I have made worlds on my Xbox and iPhone that I have gotten very interested in. Later when I got back on these worlds, instead of sending me to the place I left off, it sends me to spawn. The world still has the changes I made to it but I don't have my inventory anymore. So instead of being home with all my stuff, I'm in the middle of nowhere with nothing. I would really appreciate if you could fix that.

Sincerely, ChurroWand