IK specifically has been buggy in the past with Years of War, even on barbs. I don’t remember the specifics, but I remember in the past some people had problems getting credit for IK even on a barb for the conquest. Then at one point, I also think there was a reverse bug, where you could get credit even without the full 6p, e.g. at one point I think doing WW6/IK4 gave credit for both WW and IK, when really it only should have given credit for WW. No idea why, but based on some previous problems with IK for Years of War, it might explain why it didn’t work with Maskraider’s method?