I've renamed the validated_bk table to state (this carries the state transitions of a block as it moves through check->accept->validate->confirm->organize (or unconfirmable). And the validated_tx table to pool, as this now holds something like a tx pool, not validation states.
Transaction metadata remains in this table after a tx is confirmed (append only), though the table is pruned once the node becomes current (along with the prevouts cache and the signature batching tables).