When it comes to site migration from an old Joomla site, wordpress or a custom application you need to be able to move all your users accross to Joomla. The best and simplest way you can do this is using the new bulk user import into joomla using UE MAN Extension.
The UE MAN Extention allows the administrators to create a custom import file that contains all the relevant fields that matches your data. You can then import that file with all your user data and it gets mapped in Joomla. As part of the functionality you can take advantage of the abundance of functionlaities to allow you manage the following:
- Email passwords to users
- Set option to reset password on first login
- Set password expiry policy
- Set rules on what the user names will be (First.lastName, Email address or a custom/imported username)