unhoisting

[wordmuse]

When I hoist in an iterative way, going from

root
--- (hoist) topic
------ (hoist) sub-topic
--------- (hoist) sub-sub-topic

And if I unhoist from sub-sub-topic, URP4 returns me to root rather than to sub-topic.

Is this per design? Is there a way to make unhoisting as iterative as hoisting? If it's not per design, is there a setting on my Vista machine that could be accounting for this?

Thanks.
- Bal