8.10 Card Replenishment mentions that card replenishment occurs after an overrun is resolved, but it doesn't clarify if that includes overruns performed during the movement phase. The rule indeed applies to all overruns—those performed during the movement phase and those performed as part of the retreat process during the combat phase. If a player loses more than one block as the result of an overrun, he should draw one card for every two blocks lost as a result of the overrun.

8.6.1 Loyalty Challenge Cards Procedure explains that a player can refute a loyalty challenge by revealing a card from his hand capable of deploying the newly-deployed block. 8.6.3 Loyalty and Double Cards states, “Only one additional card must be displayed to refute the challenge, even if two blocks deployed.” The use of the word additional is confusing and the statement still does not make it clear if a double mon card must be displayed to refute the challenge (only a double mon card is capable of deploying two blocks). In fact, a double mon card is not required. A player need only reveal a card with the same mon as the deployed blocks, regardless of whether the card contains one or two mon.

You may split a stack at any point during its movement. Movement bonuses apply only to those units which fulfill the condition of the bonus throughout the entire course of their movement. Movement penalties derive from the size of the largest stack with which a unit moves during some part of its movement. After splitting a stack, forced marching the new stacks requires discarding one card per stack. A unit may not benefit from more than one forced march bonus during the course of its movement.

The Toyotomi Hideyori disk is not automatically captured if a Tokugawa stack enters Osaka when it is undefended (here, we assume the Mori units are already on the board elsewhere). The Tokugawa player must lay siege to the castle and deal at least one defender loss via at least seven impact points. Otherwise, Toyotomi remains on the board uncaptured.

Similarly, the Sanada Masayuki disk is not automatically destroyed when a Tokugawa force enters an undefended Ueda. The castle must be besieged and at least one loss inflicted to destroy the disk.

Neither disk may be overrun because they are units in control of a castle (see 7.4.3 Overruns and Castles), despite not having any movement or combat capacity.

The Ishida and Tokugawa leaders may have their loyalties challenged if deployed via a card. A change in their loyalties should be thought of as if the leaders' retainers—not the leaders themselves—changed sides.