The more important the documents the more likely they are to disappear. So, while ministry of civil aviation (MOCA) intends to shift the national carrier’s headquarters to Delhi from the iconic Air India Building at Nariman point, which might be leased out or even sold, top sources told this newspaper there is an impediment. The documents pertaining to proprietary rights of the building are missing. Not only that: sources revealed that ownership papers of Airline House in Delhi have vanished as well.