After rebinding the indirect tags and removing the intermediate container it seems to be working as expected. Actually the intermediate container may have caused the bulk of the problems as even the original code I posted was working as I would expect at least from the button case once it was removed and all of the properties were on the Root Container object.
I’m still encountering problems with the case where the value is changed as part of the Open event because the saved default was not valid.
For that I will just try to find a way to initialize the relevant properties from a global variable that is initialized from our database the first time it is accessed.