Difference between /rl and a log in/out

[shouryuu]

What is the actual difference between reloading your UI, and logging in and out of the game?

I ask this question because I've been re-working on an old addon, and I've managed to get it pretty much to work except for one small detail: my variables save fine when I do a /reloadui but go crazy when I log out and back in.

I am completely mesmerized here, and I really don't understand how that can even happen... I asked some help on the EU forums but no one answered