queued messages stay around in the mailboxes, so no state is lost, but don't get migrated/transformed/versioned via the appup mechanism, unless you opt back int

queued messages stay around in the mailboxes, so no state is lost, but don't get migrated/transformed/versioned via the appup mechanism, unless you opt back into it via libraries for it like https://github.com/ausimian/castle https://github.com/ausimian/castle