I've migrated several sites from standalone installs into a Multisite install.
For the user table, I just recreated each new user individually one by one, and readjusted the user ID's accordingly elsewhere.
Upon investigating the user meta table, it seems that WordPress is creating keys for User Levels.
As mentioned in the Codex, it notes that User Levels were deprecated as of
Why is it, that with a fresh installation of WordPress Multsite 4+, adding users, still creates "user_level" meta keys with values of such deprecated user level system?
Are user levels STILL used ANYWHERE in WordPress? or am I safe to simply just ignore those key/value pairs under the user meta table?