Hi, the Itanagar capital complex district was a proposed district and not an actual district. The fact that it has not made it to https://lgdirectory.gov.in/ and it has not been in the Arunachal District reorganization act  - https://www.indiacode.nic.in/bitstream/123456789/11345/1/the_arunachal_pradesh_%28reorganisation_of_districts%29_act_1980_as_amended.pdf is proof for that. I am going to wait a little for any counter arguments, otherwise I am going to go ahead and delete the relation. Thanks