NRI - Income in India as Resident's income & tax ?

Assessee was resident having only interest income from other sources, by investing his capital to PPF, NSC, LIC & to individuals & Pvt. ltd cos. since many years. Now he is NR since 4 years. His representative asseess has not changed his residential status in bank a/cs & in IT returns due to fear of NR complications, but paying ITax as usual. Now the representative has to send NR capital to overseas NR . How to move ?