I have a 5 sided cube (open on the bottom). I load the STL into Cura and it is sitting with right-side up. In that position, Cura says supports are necessary for the entire top. That makes sense since it is like a "roof". However, I rotate the image so that it is upside down to print. Cura still wants to put supports in the same place. If I look at the bottom of the object, it is all red (meaning needs supports) and when I print it, the entire object is filled with supports as if it needed them to support the top. How can I get Cura to recalculate where it wants to put supports after I rotate or move the object?