Always thoroughly review the converted document before finalizing any work [9†L16-L19][7†L13-L15].
This is the "nuclear option." It works 100% of the time, but you will lose editability . Use this only if you need to view or print the file, not heavily edit it. how to convert indesign file to older version
Steps:
Websites like Zamzar can convert .indd files to .idml , though complex layouts may suffer from formatting errors. how to convert indesign file to older version