I don't think we have any official policies regarding the writing of tools to translate content from one learning system to another. edX Studio supports courseware export into a format that is documented at
http://data.edx.org. Likewise, Studio supports importing this format as well.
So the plan of attack would be for interested parties to write a tool to read/write into these formats.
Also, we are planning a edX API which also might be able to be used for these means. There was just an announcement on the Open edX discussion boards regarding an API spec that has been opened up for public review.