Comment 11 for bug 1591186

I see that there are two parts to the problem:

(1) Users are able to create stack with resource properties that are hidden (https://bugs.launchpad.net/heat/+bug/1599074) (these don't have nested stack).

(2) User creating a stack with nested resources seem to fail when they use the resource properties that are hidden.

I am not sure how to handle (2). After upgrade, the stacks should continue to run even if they were created with resource properties that are marked as hidden. Can the user update the stack with same template having the same hidden properties?