Batch-export to interchange
Script for InDesign CS3/4, version 1.0.
Opens all InDesign documents in the selected folder and exports them to “Interchange Files” subfolder as inx files, which is created in the selected folder.
Click here to download the script.
Batch-export to InDesign markup
The same as above but exports to IDML-files (for CS5–6).
Download the script from here.