select condition as old_condition_id from survey_branches
where branch_id=:branch_id
update survey_branches set condition=null where branch_id=:branch_id
delete from survey_conditions where condition_id=:old_condition_id
insert into survey_conditions (condition_id, question_id,
choice_id, boolean_answer) values (:condition_id, :question_id,
:choice_id, :boolean_answer)
update survey_branches
set condition=:condition_id where branch_id=:branch_id