Issue Summary

Page blueprints created in the past, when the instance was still on the legacy editor, will break when this instance is migrated to the new editor.

Steps to Reproduce

1. Create a template with macros and variables on the legacy editor
2. Migrate the instance to the new editor.

Expected Results

The template should still work on the new editor

Actual Results

The template breaks, macros and variables won't load

Workaround

Currently, the available workaround is to recreate the broken templates.