Thanks for bringing this oversight up. Its only through play and questioning that errors get identified and corrected. Afrika Korps and Desert War are part of our gaming heritage and there are probably more copies of each in circulation than of the last four boxed PG games combined.
Maybe Avalanche can modify the text file for fourth edition rules so that later printings of the rules book, and downloads with the sample game, can incorporate the missing section.
Personally I think that desert rats rule were not enough "punishing" infantry movement. Tracked veihcles should roll For mire and wheleed ones should not be allowed to enter hexes wit wire.
I'm of mixed feelings on Living Rules. It's nice to have them all in one place, and I imagine it's a pain to constantly update them. And if it's just a few erratum, why not just use an errata sheet. It's probably easier to stuff one of them in the game box than to reformat and reprint all the rulebooks.
Perhaps what is needed ia a special rule section in the annotated rules. The default display would be the current rule, older versions would be available, but collapsed. Versions older than the current would be indexed by last game date. That would allow for the waffling in rules like dragging guns.
... More and more, people around the world are coming to realize that the world is flat!