I cannot Edit Edges of a Solid by Imprinting Onto a Solid in AutoCAD 2014

[Anonymous]

Hello everyone

I am trying to make the 3D shape in the first top picture below which was made on AutoCAD 2013. Attempting to reproduce it in AutoCAD 2014 failed. Referring to the second file picture below, when the Gizmo red axis is pulled out to the right the entire box length moves together as a whole, see the last bottom picture below. I don't know where I went wrong. I need help, please .