Hi,
Please follow ganesh suggestion & for your other query delta DTP is picking the data from active table instead of changelog table this is due to settings in the EXTRACTION tab in the DTP it will posses 4 options like below.
Active Table(with Archive)
Active Table(without Archive)
Archive(Full Extraction only)
Change log
select the 3rd option because your running delta DTP & you will get desired data in the cube.
Regards,
Harish