Recommended monitors creates duplicates

custom is not an issue

removed duplicates with:
rs= RecommendedMonitor.group([:probe_definition_id, :intervention_definition_id]).having("count(id) > 1 and min(position) and min(id)") ;nil
rs.each {|rm| RecommendedMonitor.where(["id != ? and probe_definition_id = ? and intervention_definition_id = ?",rm.id,rm.probe_definition_id, rm.intervention_definition_id]).each(&:destroy)}