SBI Magnum TaxGain Dividend Reinvestment Mutual Fund(India)?

I had bought few units of the SBI Magnum Taxgain Dividend Reinvestment Mutual Fund 3 years back. The lockin period for this MF is of 3 years. In the last 3 years i have got few units as dividend and added to my portfolio. I want to redeem my entire units in this MF. But i am not sure whether i can do so, because few units which i got as dividend are not completed the 3 years lockin period. Could someone guide me how to redeem my entire units.