I have been unable to set holidays on 3CX 10 sp5. When I access configure holidays, default settings for Aug 1 - Aug 5 appear. I have repeatedly removed these and then entered new settings for the current holiday season. The new settings do not alter my office hours or after hours IVR. When I check the Configure Holiday settings, the old Aug settings reappear and the new ones I entered have vanished. I have tried this repeatedly with and without restarting all services. My customers are expression frustration with this problem. The Office Hours and After Hours settings are adequte but the holiday configuration is poor. Thoughts?