The release of the Indexes has introduced some changes in unit composition and minimums. Some of the armies I gathered in the past will have to go through a good face lifting in order to be able to be fielded under the new unit canons.   I am no affected for the big Space Wolves faction of mine - sure a lot of stuff is probably not as it should be per the Index but I bet I have more than enough to rebalance and equilibrate some legal squads without necessity of investing again.