Problem with [bookpath]

I do not get correct paths when using [bookpath] or [bookpath-raw] or [menupath] or [menupath-raw].
(Drupal 6.3, pathauto 6.x.1.1, token 6.x.1.11)

Create a book with two child pages:
top level book (type book)
--- 1 child book page (type page)
------- 2 child book page (type page) (The page is chaild from "1 child book page")

The automated pathauto pattern for book pages (type page) is .../[bookpath-raw]/[title-raw].
The path must be
.../top_level_book
.../top_level_book/1_child_book_page
.../top_level_book/1_child_book_page/2_child_book_page

But I have
.../top_level_book (Ok)
.../top_level_book/1_child_book_page (Ok)
.../top_level_book/2_child_book_page (Bug!?)

What could be the problem?
Thank you.
Sorry for my English