Alias of single page not showing up in autonav

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I'm trying to alias the core member pages (member search, profile etc) at other points in my site. Although the aliases are created and work in breadcrumbs, they don't appear in a standard autonav for the main navigation.

I've cleared and disabled cache and looked through the autonav controller but I can't find anything that might be preventing it from working.

Anyone have any thoughts on how to fix this?

melat0nin