✅ After opening the IDML in your older version, review the document thoroughly — especially page layouts, anchored objects, and transparency effects.
: From InDesign CS4, export the file as InDesign Interchange (INX) format. This .inx file can then be opened in CS3 . Considerations and Potential Issues how to convert indesign file to older version
from the "Format" or "Save as Type" dropdown menu. Click Save. Open the IDML file in the older InDesign version. ✅ After opening the IDML in your older