What happens to the data in different name spaces after Enterprise features expires?

I have few questions after expiration of Enterprise Edition features?

1)What happens to data in the different namespaces?

I have stored 2 Students data in 2 different namespaces, say namespace 1 and 2. Both students have a same skill called java . When I query for name skill java in a particular name space , it used to give 1 unique node.
so will it give 2 nodes after expiration?

2)How to access data in a particular name space after expiration ?

3)How to roll back properly to community feature if I want only communty edition?

4)Can I download only community edition without enterprise edition free trail?
If yes, from where can I download and set up?