Replacing an entire user data with another one

[User1]

Whether you use installed version or portable version, cookies are always encrypted, the difference is only the algorithm.
You can try backuping your full User Data firstly.
Then delete cookies of google.com(including accounts.google.com) using SQLite editors(such as HeidiSQL, DB Browser for SQLite
DB Browser for SQLite)

So, Cent portable is not portable and  not trasferable between different PCs with various hardware configurations / OSses?