RequestFactory JDO One to Many bidirectional managed relationships

We were using RPC to persist our data and we want to shift to
RequestFactory!!!

We managed to make One to One and One to Many Unidirectional managed
relationships work with JDO.

We try for 2 weeks and the bidirectional is not working!!!
We persist then we use AppWrench and we see that the data are saved
but when we retrieve
with our code (getObjectById ...) the related child objects return
null.

Can someboby please provide a small functional SAMPLE of JDO 1:M
bidirectional relationship.

Unfortunately Google is not providing working samples for major areas
that is releasing in GWT or AppEngine!!!
I pretty sure that this is killing Appengine and GWT adoption from the
developer community.

The DynatableRF sample app that Google suggests covers only a small
subset of relationships
and has a lot of irrelevant code plus we do not believe that this is
the proper way to do it (copying and storing objects all the
time ...). At least for the unidirectional we managed to do it in a
much simpler and straightforward way.

Any help would be much appreciated from us and we believe from a lot
of others.

Thank you for your time.

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