hi, I encountered this problem with sketchup openstudio, practically when I try to create a patio and after obviously saving and reopening the file, it deletes the hole by filling it; how can I solve it?? here is the link link for the model of sketchup and os

hi, I encountered this problem with sketchup openstudio, practically when I try to create a patio and after obviously saving and reopening the file, it deletes the hole by filling it; how can I solve it?? here is i cant put immages because i dont have the link for the model of sketchup and ospoints