Hi David, I'm working through the MD_02_bed_01 lesson and have followed your directions on reducing the fitted sheet geometry, deleting history and then exporting the bed proxy and fitted sheet into MD. However when i run the simulation in MD the new garment just goes straight through the fitted sheet object and only seems to catch on the actual bed frame ( please see image ). I've tried exporting an importing several times but the same always happens. Any idea what might be causing this? Thanks, Jamie