Both delta enabled standard extractors: 0CRM_TGGRP and 0CRM_TGBPCT are no longer supported and SAP has provided replacements for them. These replacements did not work for us so we have created a replica of the 0CRM_TGBP and then enabled it as delta based on the data stamps of TG created in the source system.
Thanks
Abhishek Shanbhogue