Justin Maham

I too am experiencing this issue. I am just running a regular 1.7.2 server. The Nether completely regenerates every time I enter.

There are times when it even spawns me without an exit portal.

I am experiencing the same issue with the nether not saving chunks on the 1.7.2 server. What did permissions did you change to remedy this?

(I realize this is an old comment, but maybe someone will see it. Don't wan to open a new ticket if this is the solution to my problem.)