diff --git a/migrations/000.317.sql b/migrations/000.317.sql
new file mode 100644
index 0000000..98fd686
--- /dev/null
+++ b/migrations/000.317.sql
@@ -0,0 +1,31 @@
+-- P5-6694 Belgian fallback locales
+
+-- Make Dutch the fallback locale of Belgian Dutch
+UPDATE locales SET fallback_id = (SELECT id from locales where value = 'nl_NL') WHERE value = 'nl_BE';
+
+-- Make French the fallback locale of Belgian French
+UPDATE locales SET fallback_id = (SELECT id from locales where value = 'fr_FR') WHERE value = 'fr_BE';
+
+-- Delete all text values with identical fallback versions
+with rows_to_delete as (
+	select
+		texts_to_delete.textid,
+		texts_to_delete.locale_id
+	from
+		"i18n-texts_data" texts_to_delete
+		join locales locale_for_deleted on texts_to_delete.locale_id = locale_for_deleted.id
+		join "i18n-texts_data" texts_fallback on texts_to_delete.textid = texts_fallback.textid and locale_for_deleted.fallback_id = texts_fallback.locale_id
+		join "i18n-texts" on texts_to_delete.textid = "i18n-texts".textid
+	where
+		locale_for_deleted.fallback_id is not null
+		and texts_to_delete.text = texts_fallback.text
+		-- stock product titles are not fallback aware
+		and not (category = 'productTitles' and "i18n-texts".name in (select path from "product-stockproducts" join "product-products" using (productid)))
+		
+)
+DELETE
+	FROM "i18n-texts_data" texts_data
+	USING rows_to_delete
+	WHERE texts_data.textid = rows_to_delete.textid AND texts_data.locale_id = rows_to_delete.locale_id
+;
+