Background apps show old info...security issue?

That setting is turned to on but that is not the issue. My issue is completely different.

For example, you get an email, read it, delete it, purge your trash file. Three weeks later you double click home key to see what apps are running in the background and notice your email app or message app is open. There in that small screen grab is that deleted email, or message conversation that is no longer even on your ipad....complete and readable even though its a smaller image.

Then you tap that app to open it, the screen refreshes and that old deleted non existent email, message thread etc vanishes and the actual updated info shows as it should.

Where is the ipad storing that information to use as a display of background running apps?

It is intermittent, so not everytime...which is what boggles me most. I have updated software on the devise and itunes and synced to make sure both were eye to eye so to speak. I have power cycled, and power/home key to reset that way.

Honestly been lazy about restoring as new, due to my flight apps take so dang long to reload. I may have to bight the bullet and just geter done and see how it goes then.