Missing Kills

I am missing approximately 2,000 kills on Loba.. I hit my 14,000 kill goal a couple days ago, logged in today to see my kills at 12,000. Don’t know if this is a bug or if anybody else has this as well. I have 18,663 career kills, 4,477 kills not on Loba meaning I should have around 14,000 on Loba.