Bank letter is not sufficient, you need to show them your past 6 months balance as well. That's the only reason why they have requested you with this additional document. Just make sure you submit required documents and on time. Nothing to worry, this also shows that your file is under review which is a good sign.I didnt submit any bank statement previously.. i just submitted a bank letter.. Now I am planning to submit my bank statements. But I am just confused as what to write in letter of explanation..Also own an apartment in my wife' name which we are planning to sell if we get PR..should i mention that too..They have requested average balance of past 6 months and an written LOE...