Popping to wrong view after long time in the background

[mouser58907]

So I have three levels in my navcontroller, each has a different top bar. For example sake I we'll call them A -> B -> C with top bars A, B, C.

Everything works fine, unless its been in the background for 20+ minutes and I've left it open to C (Maybe B, I haven't finished testing yet.) In this case, I pop C and then B to get B again, but with a blank top bar (not a,b, or c). If I Click on one of the items in B that should be A, I get C, but then I pop it off to B, then again to B with A's top bar.

The only thing strange I'm doing that may cause it is in the viewDidLoad method of A I check a setting to see if I should auto-select an option and push B. A is a location selector. I'm wondering if after so long in the background it is re-calling viewDidLoad for A.

[mouser58907]

After a little more research, the viewwillunload was being called, so then when I hit back again viewdidload was being re-called. I just set a user default to ensure that I wasn't accidentally auto-pushing when I wasn't supposed to.