User blog comment:MisterWoodhouse/The first migrations to the Unified Community Platform/@comment-76.187.10.116-20201210234039/@comment-1807002-20201211165004

Originally, CC couldn't even be considered to migrate till last because it was some how intertwined with other legacy wikis and migrating would have caused issues (not gonna lie I do not know the specifics, just blocker issues). But last I heard these blockers are no more and probably has been assigned to the last batches already.