Modify partition range in nonempty tables - response (2) by Kiruthi

Hi,
Here the scenario, I have table partitioned by two columns(effective_Start_date and last_updated_date) and the table have data. partition range for effective start date is from 2008- 01-01 to 2013-12-01 each 1 month interval. My request is to modify the partition range from 2006-01-01 to 2013-12-01 without deleting the data. Please let me know is it possible in teradata 13.10V.
Many Thanks!