Scripting and application automation notes for the OS X Adobe InDesign application.
Notes and Errata:
PDF Export Preset : Crop Images To Frames
When creating or changing a PDF Export Preset, the property Crop Images To Frames is BACKWARDS in CS2 through CS5 (currently untested with CS5.5 and CS6). Setting the property to false will turn on the checkbox in the UI to crop image content to the frame, setting it to true will uncheck the box, and all the image data (the hidden/cropped area) will be included in a PDF resulting in a larger file. (added: 2012-06-04)