Eylau version questions

[Liebchen]

I'm looking at Eylau (main battle) and note two interesting things:

a. French units are individually indicated as being fixed, but they are not hightlighted as being fixed. OTOH they are highlighted as having moved (this being before movement). Is this bug in this version (4.09.3)?

b. The scenario description says, of the Russian ammo problem: "The Allied player will need to withdraw or limber batteries during the game similar how the Russians did during the battle to avoid running low or out of ammo." How does this work? What is this comment referring to? I thought that supply was determined by proximity to supply train, not by limbered status.