GraphQL relations pagination change from 4.6 to 5.0

docs/update_and_migration/from_4.6/update_to_5.0.md

@@ -1044,6 +1044,13 @@ If you are using GraphQL in your project, you can generate its schema by running
 php bin/console ibexa:graphql:generate-schema
 ```
 
+### Upgrade GraphQL usage
+
+- In 4.6, `relations` pagination is disabled by default, and can be enabled thanks to `ibexa.graphql.schema.ibexa_object_relation_list.enable_pagination` parameter
+- In 5.0, pagination is always activated and can't be disabled (the previous parameter doesn't exist anymore and is ignored from config)
+
+If you have code based on `relations` request returning the entire list, you have to update it, see [Pagination in GraphQL](graphql_queries.md#pagination).
+
 ### Update search indexes
 
 Ensure your search index is up to date with the following command: