Jere wrote:
The wall is a complex profile wall; the wall cap/cornice is also a complex profile wall.
There is your problem.
Because they are both walls they will automatically trim each other without SEO.
Have a look at your highlighted capping and you will see there is a hole where the wall passes through.
That is why you can not SEO because there is nothing below the wall - just a hole.
Easy to solve.
Adjust the priority strength of the capping so it is higher than the wall.
Now it will cut the wall (instead of the wall cutting the capping) and because the capping is now one solid piece you will be able to use it as your operator in SEO.
Barry.
One of the forum moderators.
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