Unable to save changes Public sample cannot be updated

[Brandt_Litton]

Anytime anyone tries to make changes to this app, we get this message saying it's apparently been changed to a public sample??

How does that happen?   I've reset the app, changed it back to undeployed, and then back to deployed, put it in recovery mode and back, and it's still showing this error.  None of our other apps seem to be having this problem.