Unfortunately, a common problem with Goldwings is misalignment of the trunk lid. Over time the lid can wear through the 'wear protector nubs' on the lower trunk resulting in damage to the paint.
Something I have tried to correct the rubbing is placing small washers in the screw recesses to space the trunk lid up. I used a minute dab of adhesive to hold the washers in place during reassembly.
I'll report my findings after it's had some use.