Can an EZ-Page TOC Page be used with externa links?

I have created an EZ-Page TOC page along with several daughter pages that display as expected in the TOC box.
However when I use the External Link selection window at the bottom of the page creation facility, to link to a static page in the site root folder, the TOC box disapears.
This behaviour is identical regardless of whether the external link is inserted in the parent page, or any of the daughter pages.
Am I misunderstanding something?
Is what I am trying to achieve possible?

Can anyone confirm whether it is possible using EZ-pages to have a TOC in which the link entries displayed go to external pages.
If I add an external link in the bottom window of either the parent page or any of the daughters pages displayed in the TOC, the TOC is not visible.
I need to know if this is possible or not.
TIA