The enterprise license is based on the number of users registered in the system, not a license for a concurrent number of logins, yes?
So if you fire an employee and replace that employee with another, how do you adjust openERP to allow the new employee to log into openERP as a user, without deleting all the data associated with that user in openERP, and maintain the same number of users for which you have a license?
If a user is deleted does that cascade and delete all the SO, PO, DO, and other information that the user has entered?
Will it mess up modules like audit trail that show who has made modifications to a record?