I have all my setting done in one file. "A4 Landscape.tcp."
Delete the Dimension layer in this file and when you load it next time the Dimension layer will be gone. This is a change in newer versions of TC. When first opened with an untitled sheet the three automatic layers are still created but after loading your "A4 Landscape.tcp" it should be gone.
Take p.e. That layer "Dimension". Why is it Use ?? I delete it in every drawing.
You can show and hide dimensions by toggling the layer on/off. Many drawings can use this method quite well.
And each time I open the drawing the dimensions are in layer " Dimension" even if he does not exist.
You must have a second instance of Dimension hidden in your layers somewhere, importing dwg/dxf files will create a second Dimension layer, perhaps it's in there.
Same goes for the snap. setting . each time you open the drawing I have to set them again.
For whatever reason when the Snaps palette was programmed, buttons were chosen as the means to activate the snaps. When programming buttons in Xcode the initial condition of the button is set as enabled or disabled. The ones that are on are enabled, the rest disabled. This initial condition is what will be set every time the program is launched.
TurboCAD has been this way for a long time. I have TC v3 going back to late 2007 and it uses the same snap buttons, default layers and sublayers.