You can't duplicate or export an app from a Managed Space at the moment. This means if you delete the unpublished (personal/shared) version of the app you totally lose access to being able to further develop it or recover the back-end contents.
This is pretty critical as you need to be super careful to never delete any apps (or at least back them up regularly) that have linked published apps at pain of having to start the app from scratch!
I believe you may be able to export apps from Managed Spaces using the APIs but it's not possible in the UI which it should be.
Qlik Partner Ambassador 2024