FSX Autogen annotator - minimum building size?

I've been using the Autogen Annotator tool for a while but after reinstalling everything on my PC, it still works but when drawing the annotation over my photoreal scenery (drawing a building) when I complete the annotation, it disappears and only remains if its of a specific size. Is there a building annotation minimum size?


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I'm not aware of a specific minimum. The scenery engine can't handle small ones, so normally I filter out those smaller than 1 meter. But I don't think Annotator has a minimum size.