Using different versions of Frame
I am running FrameMaker 9 and my client is running Frame 7.2. I have be unable to save their project in a format that they can open. I have no problems opening their project and making changes, but once I save it and check it back in, they are unable to open it. When my client attempts to open the book, they receive the following error stating that it cannoy be opened with this release of the product.

How do I save this project in Version 9 so that it can be opened by my client in Version 7.2.
Thanks
