If you look in the file that Brian posted you will see that there are no 44.137.X.X (or 44.130.X.X) records in the list to be deleted.
So your DNS records should be okay.
I know that, and that is why I am taking up the job myself. (I think it is a bit strange that the networks that are BGP or IPIP routed would not have to be cleaned)
Rob