logically i agree you.But once i had lost my ticket at NDLS which was RAC,chart prepared. I reported to police. i went to railway officials and asked, also went to ticket counter with documents.But he told me that ,had been it would have confirmed you would have been issued a duplicate tickets after paying some charges(i donot rember that now).But as this is RAC you won't be issued duplicate.This was year 2010 summer.may/june/july/aug donot remember that.