split migrations into two

db/migrate/20200516052834_rename_dataset_table.rb

@@ -1,10 +1,10 @@
 class RenameDatasetTable < ActiveRecord::Migration[5.2]
   def up
     # removing foreign keys using the datacentre table
-    remove_foreign_key "media", name: "FK62F6FE44D3D6B1B"
-    remove_foreign_key "metadata", name: "FKE52D7B2F4D3D6B1B"
+    # remove_foreign_key "media", name: "FK62F6FE44D3D6B1B"
+    # remove_foreign_key "metadata", name: "FKE52D7B2F4D3D6B1B"
 
-    Lhm.change_table :dataset do |m|
+    Lhm.change_table :dois do |m|
       m.remove_column :is_ref_quality
       m.remove_column :version
       m.rename_column :datacentre, :repository_id
@@ -13,20 +13,15 @@ def up
       m.change_column :is_active, "BOOLEAN DEFAULT TRUE" 
     end
 
-    Lhm.change_table :dataset do |m|
-      m.rename_column :version_info, :version
-    end
-
-    safety_assured { rename_table :dataset, :dois }
+    # safety_assured { rename_table :dataset, :dois }
   end
 
   def down
-    rename_table :dois, :dataset 
+    rename_table :dois, :dataset
 
     Lhm.change_table :dataset do |m|
       m.change_column :is_active, "BIT DEFAULT 1 NOT NULL"
       m.add_column :is_ref_quality, "BIT DEFAULT 1"
-      m.rename_column :version, :version_info 
       m.add_column :version, "INT(11)"
       m.rename_column :repository_id, :datacentre 
       m.rename_column :created_at, :created

db/migrate/20200520085039_rename_version_info_column.rb

@@ -0,0 +1,13 @@
+class RenameVersionInfoColumn < ActiveRecord::Migration[5.2]
+  def up
+    Lhm.change_table :dois do |m|
+      m.rename_column :version_info, :version
+    end
+  end
+
+  def down
+    Lhm.change_table :dois do |m|
+      m.rename_column :version, :version_info 
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_05_16_052834) do
+ActiveRecord::Schema.define(version: 2020_05_20_085039) do
 
   create_table "active_storage_attachments", options: "ENGINE=InnoDB DEFAULT CHARSET=latin1", force: :cascade do |t|
     t.string "name", limit: 191, null: false