I am just working on transferring a site from wordpress multisite setup into single install (fresh), and I noticed two things (maybe notice more later)
a) Blogs.dir is gone, and this
suggests I should look for "sites" folder under "wp-content"
Is this correct (looks correct to me).
b) I think I remember having "users" table for sub site (single site in multisite network) in database, and now I Just had a look and found no users table for specific site ID :(,
c) if from 3.5 multisite uses main site users table for storing and managing users, tell me how I should proceed with transfer (database wise so I can easily export users to single site install)