Hi POTS, the saving of the model filter state has a bug in it, according to which changing a parent checkmark wont be saved but if you check/uncheck child types saving will work just fine. In your case in the attached picture try unchecking "IfcOpeningElement" and "IfcVoidingFeature" and this should be a workaround for the time being. I know it's a bit more hustle, but it will get the desired results and we will try to address this bug as soon as possible.
I appreciate your answer. We knew at the office about the bug, but im afraid even changing the parent doesnt work anymore. The IfcOpeningElement shows in other software / ACC and highly unwanted by our clients, I have to explain to them already for months that we have a bug in Archicad, that I cant do anything about it, that's quite embarrassing, I personally dont know why Graphisoft doesnt fix it immediately. Is there any expected date for the fix ?