If you put "forms" into the folder filter, it would filter out all of your
first level folders, as their names would not go through the filter, and
thus you would never get to the second level (where your "forms" folders
are), as all first level folders were filtered out.
If your first level folders had something in common you could add that to
the filter. Or if you could rename them prepending something like
'folders_' in front of their name, then the filter like "folders*" would
I can't imagine other ways for this to work, as recursion comes into play,
and there is a single filter to work for all levels.