We are on Q4 2015, CU1 and we've recently had an issue where we are missing all the messages in the Messages tool. This has affected all of our courses, both active/inactive.
We also had a batch course purge by DSK going on around the same time-frame, but we have never seen this cause course messages to disappear, especially from courses that were not in that DSK.
Has anyone experienced anything similar with course messages disappearing?
Any ideas would be helpful.