Estoy tratando de combinar 2 filas de resultados en 1 usando la siguiente cláusula CASE. "<26" debería aparecer solo una vez, y los resultados deberían combinarse.

SELECT  
    CASE org.size
        WHEN 0 THEN '<26'
        WHEN 1 THEN '<26'
        WHEN 2 THEN '26-50'
        WHEN 3 THEN '51-100'
        WHEN 4 THEN '101-250'
        WHEN 5 THEN '251-500'
        WHEN 6 THEN '501-1000'
        WHEN 7 THEN '1001-5000'
        ELSE '5000+' END
        AS 'Size',
        COUNT(DISTINCT org.id) AS '# of Companies'
FROM org INNER JOIN usr ON usr.orgid = org.id
    INNER JOIN usr_role ON usr.id = usr_role.usrid
WHERE org.deleted = 0 AND usr.brnd = 1 AND usr_role.role = 1
GROUP BY org.size;