To change the Username of a Member, follow the steps below:
1. For this example I will take you through changing a User's number from 2929 to 1818 when the system gives an error saying that the username "1818" cannot be used as it is already in use or has a history assigned to it.
2. Create a new "dummy" user with the username 1818 via "Users">>"Add New". (You will have to enter in a dummy first name and last name).
3. Once this has been created go into the account and change the username from 1818 to 1818111.
4. This means that you will now be able to change 2929 to 1818.
5. All that is left is to delete the dummy account 1818111.