Folders showing in outlook.com but not WLM

Hi.  My mail account has loads of nested folders so I can't always remember where they are.

I've gone to outlook.com (which automatically un-nests them) and used ctrl+F to find them on the screen.  Then I scroll up a bit and see where they are in the folder structure.

However, when I go over to WLM, those folders are not there.

This wouldn't be that odd (I'd just imagine they were missing), but if I search in WLM (ctrl+shift+F) for a certain mail or contact within that folder, their mails show up.

I can even open up those emails in WLM... even though I can't find the folder anywhere.

What's going on?

I've spend nearly two hours on this and it's really not that good a use of my time.

Please help.

Thanks

William