To Remove All Overrides From a Layer for the Current Layout Viewport
On a layout, double-click inside a layout viewport to make it the
current viewport.
Click
Home tab
Layers panel
Layer Properties
In the Layer Properties Manager, right-click the property override that you want to remove. Property overrides are in columns labeled VP Freeze, VP Color, and so on.
Click Remove Viewport Overrides For Selected Layers In Current Viewport Only.