Top Navigation Links not showing

I've just updated a site using the Flexi Store template to V8.0.2 but the Top Navigation Links configured under the old version have disappeared. The Top NavigationLinks section in the template options show the links I require but the links do not show on the live site.

I've also tried a different template and then reverted back to the Flexi Store template but the problem still exists.

Any suggestions to fix the problem.