By using the IDML format, you can ensure that your design workflow stays smooth, regardless of which version of the Creative Suite your teammates or clients are using.
Once the IDML opens in the older version, immediately go to File > Save As and save it as a standard .indd file to ensure stability. 2. Using the Creative Cloud "Back-Save" Service how to convert indesign file to older version link
If the original file used third-party plugins, those won't transfer via IDML unless the older version also has them installed. 4. Third-Party Tools (The "Emergency" Option) By using the IDML format, you can ensure
before converting to ensure all linked images and fonts stay with the document. By using the IDML format