I would like to create a custom pager on all my node pages used in a node hierarchy menu with the module drupal.org/project/custom_pagers
To use it I need to create a views of my nodes sorted by hierarchy.

-node A
--node A1
--node A2
---node A2-1
---node A2-2
--node A3
-node B

I need the same order than the represented tree.

I used the relation ship Node Hierarchy: Parent Node ID
and 2 sort options in this order:

(Parent Node) Node Hierarchy: Child Weight (asc)
Node Hierarchy: Child Weight (asc)

but it gives me this result:

-node A
-node B
--node A1
--node A2
--node A3
---node A2-1
---node A2-2

How to group result by parent ?