The following was renumbered on Nov 2018 for 255B Gyantwachia

Consolidated S4 variations from 4 to 3; eliminated S15.5 merging it into a MVE with S15; BB6 listed the S22 and S25 as different issues when they're the same listing, replaced the S25 listing; added the 2006 NE-3A flap as an event host flap.