How To Convert Indesign File To Older Version 'link' Online
There are community-created scripts (such as the one by Gregor Fellenz) designed to "back-save" documents. These scripts essentially automate the export to IDML process but can sometimes handle packaging linked files more efficiently.
✅ Always keep the original newer version file untouched. Work from the IDML copy. how to convert indesign file to older version
How to downsave an InDesign file to open it in an older version There are community-created scripts (such as the one