Hi mandar,
the marked one cannot have flowed in my opinion, because it shows up in a specific height, that is one of the cells, where it goes wrong, right?
I'm pretty sure there is something wrong with the output-type.
A good solution for me is always to extract the small piece of the tree into a new form and process just that small part. (BTW: you can easily copy/paste it into another form)
~Florian