Talk:Mastery Rank/@comment-192.0.210.190-20161112235459/@comment-121.6.105.140-20161113085513

dropped from 27,490 (including junctions) to 27,378. A loss of 122 Mastery Points, which explains this:

https://forums.warframe.com/topic/715877-tww-dropped-my-mastery-rank-bug/

For people who are sitting on threshold of masteries (literally 1 weapon level) you'll be pushed back to last mastery rank.