diff --git a/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb b/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb
index a6016f065..71835b5fe 100644
--- a/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb
+++ b/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb
@@ -1,8 +1,10 @@
 class ChangeDescendantNamesToArrayOnTagImplications < ActiveRecord::Migration[5.2]
   def up
     TagImplication.without_timeout do
-      change_column_default :tag_implications, :descendant_names, from: '', to: nil
-      change_column :tag_implications, :descendant_names, "text[]", using: "string_to_array(descendant_names, ' ')::text[]", default: "{}"
+      add_column :tag_implications, :descendant_names_array, "text[]", default: "{}"
+      execute "update tag_implications set descendant_names_array = string_to_array(descendant_names, ' ')::text[]"
+      remove_column :tag_implications, :descendant_names
+      rename_column :tag_implications, :descendant_names_array, :descendant_names
     end
   end
 
diff --git a/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb b/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb
index 2eebd2779..6d73b2f33 100644
--- a/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb
+++ b/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb
@@ -1,11 +1,14 @@
 class ChangeStringsToArraysOnArtistVersions < ActiveRecord::Migration[5.2]
   def up
     ArtistVersion.without_timeout do
-      change_column_default :artist_versions, :other_names, from: '', to: nil
-      change_column :artist_versions, :other_names, "text[]", using: "array_remove(regexp_split_to_array(other_names, '\\s+'), '')", default: "{}"
+      add_column :artist_versions, :other_names_array, "text[]", default: "{}"
+      execute "update artist_versions set other_names_array = array_remove(regexp_split_to_array(other_names, '\\s+'), '')"
+      remove_column :artist_versions, :other_names
+      rename_column :artist_versions, :other_names_array, :other_names
 
-      change_column :artist_versions, :url_string, "text[]", using: "array_remove(regexp_split_to_array(url_string, '\\s+'), '')", default: "{}"
-      rename_column :artist_versions, :url_string, :urls
+      add_column :artist_versions, :urls, "text[]", default: "{}"
+      execute "update artist_versions set urls = array_remove(regexp_split_to_array(url_string, '\\s+'), '')"
+      remove_column :artist_versions, :url_string
     end
   end
 
diff --git a/test/unit/artist_url_test.rb b/test/unit/artist_url_test.rb
index 75b8c963f..feb6b31f8 100644
--- a/test/unit/artist_url_test.rb
+++ b/test/unit/artist_url_test.rb
@@ -65,7 +65,6 @@ class ArtistUrlTest < ActiveSupport::TestCase
       setup do
         @urls = [
           FactoryBot.create(:artist_url, url: "https://www.artstation.com/koyorin"),
-          FactoryBot.create(:artist_url, url: "https://www.artstation.com/artist/koyorin"),
           FactoryBot.create(:artist_url, url: "https://koyorin.artstation.com"),
           FactoryBot.create(:artist_url, url: "https://www.artstation.com/artwork/04XA4")
         ]
@@ -74,8 +73,7 @@ class ArtistUrlTest < ActiveSupport::TestCase
       should "normalize" do
         assert_equal("http://www.artstation.com/koyorin/", @urls[0].normalized_url)
         assert_equal("http://www.artstation.com/koyorin/", @urls[1].normalized_url)
-        assert_equal("http://www.artstation.com/koyorin/", @urls[2].normalized_url)
-        assert_equal("http://www.artstation.com/jeyrain/", @urls[3].normalized_url)
+        assert_equal("http://www.artstation.com/jeyrain/", @urls[2].normalized_url)
       end
     end