Being able to save backwards multiple versions has been an ongoing frustration for some InDesign users, especially those who don’t upgrade with each version. The process for opening a CS4 document in CS3 is fairly straightforward. Export the CS4 document to INX format, and then open the INX file in the updated version of InDesign CS3.
Unfortunately, you can’t open that INX file in InDesign CS2. Instead, you have to play a leapfrog game in which you open the INX file in InDesign CS3, save it, and then export it again to an INX file, which can then be opened in InDesign CS2. That’s all fine and dandy, but what if you don’t have InDesign CS3? In this case, I’m not sure what the best solution is. Here’s a comment Richard left in the Help topic on saving backwards:
You may want to add this to the Adobe suggestion box: have an automated, fee-based set-up where users can upload files to be converted to earlier Adobe products. I, like Lauren and Robb, need a couple of InDesign CS4 files “saved down” to CS2 and am not comfortable with having a ‘stranger’ in the forum converting proprietary files for us. If we users could pay a few bucks per file to be able to upload it (via e-mail or FTP) to Adobe, have it converted, then e-mailed back to us that’d be a great service to us customers
For a number of months, I offered a free service in which I used InDesign CS3 on my computer to save files that can be opened in InDesign CS2. Due to a combination of technical and personal reasons, I can no longer provide this service.Here are your alternatives:* Try the method that David Blatner mentioned in comments for saving down from CS4 to CS2.* Find someone who has InDesign CS3 and ask them to export your CS4 INX files again to an INX format that can be opened in InDesign CS2. Someone in the InDesign user forums might be able to help.* Convince the person running InDesign CS2 to upgrade to the newest version of InDesign.* To complain to Adobe about the ongoing inability to save backwards more than one version, fill out an online form.