I have defined a Yes/No user-defined field in the top-level contacts folder.
I have another level of folders beneath it. When I defined the field, I
defined it to apply to all subfolders beneath, and indeed I can add and view
those fields in all folders.

But I can't seem to filter. To add a filter, I have to refine the view in
the top-level Contacts folder, where I defined the fields. Only there are the
new fields visible in the pick-list for defining the filter criteria. The
filter works in this folder. But it doesn't work in the subfolders. When I
look at the view definition in them, rather than a simple definition of the
criteria, there's a strange cryptic reference to the schema somewhere. And
the picklist for fields doesn't recognize the user fields, even though they
are displayed in the view.

Am I doing something wrong here or does this just not work as expected?

Thanks,
BnB