https://www.adobe.com/devnet/indesign/save_as_cs4.html
If none of the above methods work, you may need to manually recreate the file in the older version of InDesign. This can be time-consuming, but it ensures that the file is accurately recreated in the older version. how to convert indesign file to older version link
: Respect for elders is a universal value. Society is often structured hierarchically, visible in family seniority, caste rankings, and the formal deference shown to superiors. https://www
This is the standard way to "downsave" a file for compatibility with : Open your document in the newer version of InDesign. visible in family seniority