Select the Drawing on the layout.
If you right-click, the context menu will show the Open Source View command. If you use this command it will take you to the source of the Layout and display it with the View Settings it is currently displayed. Then you can see if the layer combinations and other settings result in what you want to see.
You can also use the Modify Source View Settings command to change those settings such as Layer Combinations to display those dimension layers.
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