diff --git a/db/migrate/20200902225712_fix_query_ids.rb b/db/migrate/20200902225712_fix_query_ids.rb
deleted file mode 100644
index 0b68bbd..0000000
--- a/db/migrate/20200902225712_fix_query_ids.rb
+++ /dev/null
@@ -1,104 +0,0 @@
-# frozen_string_literal: true
-
-class FixQueryIds < ActiveRecord::Migration[6.0]
-  def up
-    ActiveRecord::Base.transaction do
-      # Only queries with unique title can be fixed
-      movements = DB.query <<-SQL
-      SELECT deq.id AS from, (replace(plugin_store_rows.key, 'q:',''))::integer AS to
-      FROM plugin_store_rows
-      INNER JOIN data_explorer_queries deq ON deq.name = plugin_store_rows.value::json->>'name'
-      WHERE
-        (replace(plugin_store_rows.key, 'q:',''))::integer != deq.id AND
-        plugin_store_rows.plugin_name = 'discourse-data-explorer' AND
-        plugin_store_rows.type_name = 'JSON' AND
-        (SELECT COUNT(*) from data_explorer_queries deq2 WHERE deq.name = deq2.name) = 1
-      SQL
-
-      return if movements.blank?
-
-      # If there are new queries, they still may have conflict
-      # We just want to move their ids to safe space and we will not move them back
-      additional_conflicts = DB.query(<<~SQL, from: movements.map { |m| m.from }, to: movements.map { |m| m.to }).map { |conflict| conflict.id }
-        SELECT id FROM data_explorer_queries
-        WHERE id IN (:to)
-        AND id NOT IN (:from)
-      SQL
-
-      DB.exec <<-SQL
-        CREATE TEMPORARY TABLE tmp_data_explorer_queries(
-          id INTEGER PRIMARY KEY,
-          name VARCHAR,
-          description TEXT,
-          sql TEXT,
-          user_id INTEGER,
-          last_run_at TIMESTAMP,
-          hidden BOOLEAN,
-          created_at TIMESTAMP,
-          updated_at TIMESTAMP
-        )
-      SQL
-
-      movements.each do |movement|
-        # insert moved and conflict queries to temporary table
-        DB.exec <<-SQL
-          INSERT INTO tmp_data_explorer_queries(id, name, description, sql, user_id, last_run_at, hidden, created_at, updated_at)
-          SELECT #{movement.to}, name, description, sql, user_id, last_run_at, hidden, created_at, updated_at
-          FROM data_explorer_queries
-          WHERE id = #{movement.from}
-        SQL
-      end
-
-      # insert rest to temporary table
-      DB.exec(<<-SQL, already_moved_ids: movements.map(&:from) | additional_conflicts)
-        INSERT INTO tmp_data_explorer_queries(id, name, description, sql, user_id, last_run_at, hidden, created_at, updated_at)
-        SELECT id, name, description, sql, user_id, last_run_at, hidden, created_at, updated_at
-        FROM data_explorer_queries
-        WHERE id NOT IN (:already_moved_ids)
-      SQL
-
-      # insert additional_conflicts to temporary table
-      new_id = DB.query("select greatest(max(id), 1) from tmp_data_explorer_queries").first.greatest + 1
-      additional_conflicts.each do |conflict_id|
-        DB.exec <<-SQL
-          INSERT INTO tmp_data_explorer_queries(id, name, description, sql, user_id, last_run_at, hidden, created_at, updated_at)
-          SELECT #{new_id}, name, description, sql, user_id, last_run_at, hidden, created_at, updated_at
-          FROM data_explorer_queries
-          WHERE id = #{conflict_id}
-        SQL
-        DB.exec <<~SQL
-          UPDATE data_explorer_query_groups
-          SET query_id = #{new_id}
-          WHERE query_id= #{conflict_id}
-        SQL
-        new_id = new_id + 1
-      end
-
-      movements.each do |movement|
-        # update group ids for moved queries
-        DB.exec(<<~SQL, to: movement.to, from: movement.from)
-          UPDATE data_explorer_query_groups
-          SET query_id = :to
-          WHERE query_id= :from
-        SQL
-      end
-
-      # clear original table and copy data from temporary table
-      DB.exec("DELETE FROM data_explorer_queries")
-      DB.exec("INSERT INTO data_explorer_queries SELECT * FROM tmp_data_explorer_queries")
-
-      # Update id sequence
-      DB.exec <<~SQL
-        SELECT
-          setval(
-            pg_get_serial_sequence('data_explorer_queries', 'id'),
-            (select greatest(max(id), 1) from data_explorer_queries)
-          );
-      SQL
-    end
-  end
-
-  def down
-    raise ActiveRecord::IrreversibleMigration
-  end
-end