The Edit SOP will lost when you select a component(don't move actually) and switch from move tool to select. I know it is because the edit sop has no effect for result. I'm making a tool working with the Edit SOP. But it often lost by some click. How to avoid this lost?
Your Edit SOP are lost probably because it has never edited. Once you have do just one operation (translate / rotate / scale) you can switch from move tool to select and is still here. That's normal.