flex- facing issue on moving to bin release

We are hosting a flex product on Azure. Till recently we were using the bin debug version and things were working, albeit slow. When we switched to the bin-release version, we are facing 2 errors

a) In some cases, the switching between module开发者_开发百科s doesn't work.(We have a parent container that calls the modules). On pressing Back button, parent container flips out module B, but not able to get in module A

b) Module A/B are unable to call an xml file, resident on the server using url-loader.

As we don't get any error reported for these, I am not clear where the issue is.

Do these issues pertain to security/ mistakes in deployment? Any pointers will help

Thanks