SQL HAVING BETWEEN a date range

I am trying to retrieve the count of records between a certain date range that is specific to the users min date and max date in another table.

This is what I have so far, however it is excluding at least 13 records that I know of. Can you tell if there is an error in my logic?

Thanks in advance for any input you have!

SELECT   rtam.dbo.wfm_process_instance.user_id AS user_id,
         MIN(rtam.dbo.wfm_process_instance.LOCAL_USER_START_TIME) AS Min_Date,
         MAX(rtam.dbo.wfm_process_instance.LOCAL_USER_START_TIME) AS Max_Date,
         0 AS IVR_Calls,
         COUNT(*) AS Total_Calls
FROM     rtam.dbo.WFM_PROCESS_INSTANCE
         LEFT OUTER JOIN
         rtam.dbo.WFM_PROCESS_type
         ON rtam.dbo.wfm_process_instance.PROCESS_TYPE_INDX = rtam.dbo.wfm_process_type.INDX
WHERE    rtam.dbo.wfm_process_type.DISPLAY_NAME = 'DTV Inbound2'
         AND EXISTS (SELECT   rtam.dbo.gnr_Tbl_72_type.CTRL_USER_ID,
                              CONVERT (VARCHAR (10), MIN(rtam.dbo.gnr_tbl_72_type.LOCAL_COL_113), 101) AS min_date,
                              CONVERT (VARCHAR (10), MAX(rtam.dbo.gnr_tbl_72_type.local_col_113), 101) AS max_date
                     FROM     rtam.dbo.GNR_TBL_72_TYPE
                     WHERE    rtam.dbo.GNR_TBL_72_TYPE.CTRL_USER_ID = rtam.dbo.wfm_process_instance.USER_ID
                     GROUP BY rtam.dbo.GNR_TBL_72_TYPE.CTRL_USER_ID
                     HAVING   rtam.dbo.wfm_process_instance.LOCAL_USER_START_TIME BETWEEN CONVERT (VARCHAR (10), MIN(rtam.dbo.gnr_tbl_72_type.LOCAL_COL_113), 101) AND CONVERT (VARCHAR (10), MAX(rtam.dbo.gnr_tbl_72_type.LOCAL_COL_113), 101))
GROUP BY rtam.dbo.wfm_process_instance.USER_ID
ORDER BY rtam.dbo.wfm_process_instance.USER_ID;

Copyright Notice：Content Author:「Amanda Brine」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/21195561/sql-having-between-a-date-range