Thanks for the walk through on the file structure. I might be able to come up some sort of script with this information, to import just the data we need.
We suspect that our MoodleData has grown fat over the decade we've had it, and want to start fresh.
I did not JUST transfer from 2.6 to 2.6, as you suggest, to ensure data integrity. But I know that would have failed, as we moved NO MoodleData.
I think we're getting close. Thanks for your input, we appreciate it.