I retired in 2014 and received pension from U.P. state .Due to personal circumstances I had to live with my son at Canada and also taken citizenship here along with OCI of India . I no longer have a permanent address in India.as my temporary address valid till now will no longer be available as the owner of the property sold it.I seek guidance from experts on resolving address related issues and updating my address on important documents related to I.Ds and bank cards etc .Please advise on the necessary steps to address this problem.