Dreamweaver will occasionally place include files in the wrong spot. I'm not sure the cause but it is usually inconsistent. If it keeps happening then we can do a screen sharing session to investigate it.
The required field settings not sticking is a known issue that we will fix in an upcoming release.
You can set the initial state of the checkbox from the dreamweaver property inspector directly after creating the form. You can also update the checkbox to Y/N by updating the server behavior on the created page after running the wizard.