I have been working on a custom export based off of the text file export to be used with Chancery's eClass Grades 6.9.2 that we use at our school. If anyone is interested in the code for this please let me know and I would be happy to share what I have done so far and work towards improving it.
I would love to see what you have come up with! we have been struggling to get Chancery to work with moodle. You can email me what you have at email@example.com.