Hi All, this is a known error. The problem is that when you make multiple Views of a single Schedule with different Renovation Statuses, in one case it will list certain windows, and in another case they might not have the "existing" status, so they do not exist in the schedule either. As a result, the annotations connected to them have nothing to connect to, and they go missing.
There is no easy fix to this phenomenon. The only workaround to avoid the mentioned issue is to make sure that you only have ONE single View saved of each schedule (if you need more than one, please duplicate the whole schedule, and save the new view from there). Best, k