Not to say it's not possible, but I'd presume/hope v2 would have caught it if the meaning was omniscient player "Known" rather than factoring in the routing unit's LOS into the "Known" equation.
I agree...but the wording is exactly the same in v2...that is it says "never" and only gives the one exception.
Bottom line, the only time this rule would every apply is when moving ADJACENT to a "Known" enemy unit that wasn't "Known" until the brokie got ADJACENT...any other scenario (i.e., LOS before getting ADJACENT)and the brokie never gets that close.
Strikes me that the intention might be to avoid the hokie situation of a brokie routing ADJACENT to an unconcealed GO enemy unit and then continuing to rout on...for example:
(Using the same map snap-shot)
German brokie starts in M9
German leader in L10
Knwn GO Brit in N10
unconcealed GO Brit in K9
In the above scenario the brokie can't rout to M10 but can (based on your interpretation) rout ADJACENT (L9) to the Brit in K9 and then continue to L10 to reach the leader. Just seems odd to me that this could happen and the GO Brit unit in K9 can do absolutely nothing to hinder the movement of the brokies in any way. In fact there could be a platoon of Brit MMC armed with HMG and a 10-3 leader and they will just sit and watch the broken Germans sprint on by. On top of that it also goes against the concept that brokies are some what "out of control".