We recently configured the Data Export Service and while creating the export profile, some of the entities were not appearing there.
We had the Change Tracking Enabled for them.
This is what it was showing to us.
Trying after few hours we got all our entities there
I think it might be caching or there is some pull mechanism that took time to detect that change at the Data Export Service side. Not sure though.
Please drop your comments if you have also faced this and know the exact reason for that.
Hope it helps.