when is the due date for filing returns of partners of a partnership concern which is liable for tax audit?

normally due dates for individuals is 31st july, but for partners of a partnership concern which is liable for tax audit,will the due date be 30th september,i;e due date of the firm, as the partners personal details cannot be finalised until the tax audit of the firm is completed. also if we file the individual partners return by 30th september, whether they will get the benifit of carrying forward the losses if any for the further years.