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Insert Into DevTrackerMy.dbo.MembershipUser(Id,
                                            UserName,
                                            LoweredName,
                                            Description,
                                            Password,
                                            PasswordFormat,
                                            PasswordSalt,
                                            Email,
                                            LoweredEmail,
                                            PasswordQuestion,
                                            PasswordAnswer,
                                            DisplayName,
                                            IsApproved,
                                            IsLockedOut,
                                            CreationDate,
                                            LastActivityDate,
                                            LastLoginDate,
                                            LastLockedOutDate,
                                            LastPasswordChangeDate,
                                            FailedPwdAttemptCnt,
                                            FailedPwdAttemptWndStart,
                                            FailedPwdAnsAttemptCnt,
                                            FailedPwdAnsAttemptWndStart,
                                            IsDismission,
                                            IsNative)select                                      us_id,
                                            us_login_name,
                                            '',
                                            '', 
                                            'J20oEpsshlpU2K0dLrIt6wKk0Uo=',
                                            1,
                                            '4BDB52D578574CF316DE3CB1FC7F3CEB8AF5E6324E088EF59D02B870E8C67B176CB3EFA7CEFBD4DDFC64C90653FDDAD709AF8A1DA20F6D598FFA07B58EE765F4',
                                            us_email,
                                            '',
                                            '123456',
                                            'ZK74MBIzpmb30SWtI2fMMlia+g4=',
                                            us_username,
                                            'True',
                                            'False',
                                            GETDATE(  ),
                                            GETDATE(  ),
                                            GETDATE(  ),
                                            GETDATE(  ),
                                            GETDATE(  ),
                                            0,
                                            GETDATE(  ),
                                            0,
                                            GETDATE(  ),
                                            'False',
                                            'True'
from 
GC_DevUser.dbo.gc_users
Msg 2627, Level 14, State 1, Line 1
Violation of UNIQUE KEY constraint 'MembershipUser_UC1'. Cannot insert duplicate key in object 'dbo.MembershipUser'.
The statement has been terminated.