Dunning Letters ver 9.0

 I've noted in ver 9 that Dunning letters have been changed to an App Engine process and no longer use the SQR.  In doing this, there have also been PeopleCode updates to the tables used.  We had customized the SQR and actually had three different scenarios being used.  I'm curious if there is a simple way to determine the PeopleCode changes made related to Dunning Letters.  I've already found the one that deactivated the incrementing of the dunning id.
We are going live this weekend and so far I haven't gotten the delivered version to work.  I plan to look at it more, but thought it would be quicker to get the SQRs working, depending on how much PeopleCode has been changed.