Tier progression problem in BF2042

I’ve been grinding on BF2042 for some time and I noticed that as soon as you hit T3 on any weapon or specialist, the progression of its required task (e.g. kills) just stops functioning and I can’t progress the tiers, only the specialist classes can progress (e.g. assault class, support class ect)

i’d really like this fixed because I want to be able to get Tier 1 on some of my specialists and guns