I think it's up to one to enforce privacy, I'll be happy if Jolla doesn't make an active effort to inform government agencies about data that they have, and instead make an active effort to avoid doing so. This is a lot easier to do in the EU than in the US though.

Back to this topic, what would be ideal is an application for the N9 that exports something (pretty much like Backup/Restore) and then the same application, but for Sailfish which imports it. You can guess that it would be a pain to do as there will be 2 different applications accessing different data sets, and in fairness there isn't much market for the N9. I doubt Apple/Android would let you do any on their devices/OS's because they want to have your backup in their "cloud".