Card Rulings talk:Level Retuner

When you activated level conversation lab for the level 8 blue-eyes white dragon and role a 4, blue-eyes white dragon is a level 4 in you hand and on the field for this turn, your face-up level 4 blue-eyes white dragon that on the field if during the same turn you activated level retuner to make the level 4 blue-eye white dragon a level 2 when you end your turn would it stay level 2?