>Interesting... that clarifys my misunderstanding of 1-Default Data Session. I thought it referred to the public datasession. Still, don't you have to:
>
>1. have some sort of form handling mechanism to determine which child forms are instantiated and close them when parent is closed.
>2. prevent user from launching same child form twice.

Yes to the above. I guess I am spoiled in that the framework I use does all that stuff for you.

>3. constantly check if child/parent exists if you need to update related form objects from a related form's logic.

Not sure what you mean by this, so I don't know if you have to do it or not.

>These (and some I haven't thought of yet) are not relevant when using formsets. I'm still interested in hearing why formsets are discouraged.
>

I don't know. Also, I just looked at the 8.0 doc and 7.0 Hackers and neither of these say that these a backward compat things and/or not to use them. So, who discourages them?

BOb