This should rectify the issue. Just run it as a mysql query. It should update the users soul_value_lev correctly based on their level. Once you run it, they should only have to relog.
Code:
UPDATE cq_user SET soul_value_lev='1' WHERE level > 1 AND level < 50;
UPDATE cq_user SET soul_value_lev='2' WHERE level > 49 AND level < 70;
UPDATE cq_user SET soul_value_lev='3' WHERE level > 69 AND level < 90;
UPDATE cq_user SET soul_value_lev='4' WHERE level > 89 AND level < 100;
UPDATE cq_user SET soul_value_lev='5' WHERE level > 99 AND level < 110;
UPDATE cq_user SET soul_value_lev='6' WHERE level > 109 AND level < 120;
UPDATE cq_user SET soul_value_lev='7' WHERE level > 119 AND level < 125;
UPDATE cq_user SET soul_value_lev='8' WHERE level > 124 AND level < 130;
UPDATE cq_user SET soul_value_lev='9' WHERE level > 129;