2k8R2: Checkpoints + sequence container. Container contents dont execute on rerun

2 sequence containers,

2nd one has a script task that does a messagebox popup and a sql task that fails

I set the FailPackageOnFailure to true on the 2nd sequence container.

My understanding of this situation is that if any task in the 2nd seq container fails then the seq container will be executed on retry. I'm not seeing that. The script task and sql task don't rerun....

First Run

Rerun

Is my understanding of checkpoints incorrect?