Your SketchUp model must contain a scene which you then use in a Layout viewport.
This scene must have been updated beforehand and/or the model reloaded from within Layout.
This scene will remember your Tags, any hidden geometry [the View option must be checked to displayed it in SketchUp and that scene updated too] etc.
You only use 'hide' or 'show hidden geometry' as a temporary measure to help you model. You should make a group/component of all related faces and edges and assign a Tag to that 'container'. Then switch the relevant Tags on/off to allow you to best see what's what in your model. Never assign Tags directly to faces or edges, unless you want a nervous-breakdown!
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