dataProcessor updated flag

I have two treegrids working with dataprocessor (row mode). Im using d-n-d options between both treegrids. Is it possible to know which row is updatated but not saved?? is there any flag that I can use to determine the state of a row?? this is necesary because this is only way to know real the parent ID.

dataprocessor mantain array of updated rows

ID of latest updated row can be fetched as