Capital gain

Neeraj Agarwal (business) (7 Points)

18 July 2019  
flat sale took place on jan 2019 , and purchase of new flat on April 2019. on may 2019 the person expire so I have two doubt

1) can purchase consider as a sec 54 deduction as purchase translation took place in another financial year

2) In which year I should filed the last return for the person