Hello,
since this problem seems to appear more often I will show a way which should solves this problem.
- Make sure you have "Multiple selection" selected (The second Icon from the right in the toolbar shows "M"). You can toggle it by clicking on the Icon.
- left mouse click on the place where you want to change the layer.
- MachScreen will show all control elements from there, independent whether visible or covered. When you hover with the mouse over the element names, the selected element is shown with a colored frame to help identify the control. You can change the layer order by dragging and dropping the image. To do so, click the bitmap to move, hold down the left mouse button and drag it to the required place. Save your screen set and reload the changed screenset in Mach3. see attachment
Klaus