I just got a new computer and freshly installed revit 2019 and the newest WIP from October 22.
There’s a bug when you copy “Filter Mask…” component in grasshopper. Apparently i cant copy one and use another place, but i have to create a new one. There is something fishy going on in the background.
This means if i have a larger workflow that I want to duplicate then I have to recreate the Filter Mask components.