"Private DPSG School filled an online establishment on 1 April 2016, but this school was donated by Chiranjiv Bharati School to DPSG. Chiranjiv Bharati School submitted a closure of establishment application on 14 June 2016 to the EPFO Commissioner. In this application, it is mentioned that the school is being donated to DPSG. DPSG issued a continuation of service letter to Chiranjiv Bharati School on 1 April 2016, before Chiranjiv Bharati's closure application. Is this 1 April 2016 letter valid? Kindly share your opinion."