If i want to show the 404 page instead of an error message it doesn’t work. The content is itself is a least not shown but no redirect happens. Only if set a custom url redirect it works.
URE does not make any redirection itself in this case. It should exclude link from any WP listings and searches. So visitor trying to open the link should get “not found” message or 404 page provided by active theme settings. Does it work this way in your case?
Well i use the pro theme from theme.co, it has a plugin to show a custom 404 page. Maybe this is the case here. Anyway, the redirect work if set this custom url from the 404 page.