i have been diagnosed with complex post traumatic stress disorder with psychosis, before this disorder i was diagnosed with schizo affective disorder and on dla, can i contine if i have the new diagnosis of CPTSD?

DLA is payable dependent on what your care needs are. Regardless of your condition, if you need help with carrying out basic day to day activities then you will be entitled to the Care component and if you have problems with mobility you will be entitled to the Mobility component. the amount you receive depends on which "rate" you qualify for and this differs dependent on the severity of your condition and how much help you need.

You will obviously have to be examined by a medical examiner in order to qualify but a change in your diagnosis should not make a difference as long as your care/mobility requirements have not changed.