Blocked Fire and elevation, 4th Ed.

[Poor Yorek]

10.1 says this in regards to blocked fire and friendly units on different elevations: "This rule applies to units firing from a higher elevation through their own troops on a lower elevation as well."  What about the converse?  Say there are units at the base elevation, firing at units at level 40 with a friendly unit in between on the 30 level with no open hex between the friendly unit on level 20 and the target.  Is the fire blocked or not?  I think that since the statement in the rules specifies higher to lower fire that lower to higher is OK.  So I think the fire in my example is OK and not blocked.  What do you think?

I read this as stating that different elevations for firing/target have no affect on the implementation of the underlying fundamental rule. My take on why they felt the need to reinforce the application of the rule to the case of higher firing on lower rather then a more generic "this rule applies regardless of relative elevation of target/firing unit" is that the rule author simply didn't think that the issue you pose would come up or would be considered "well, of course not." 

Of course, that's inferring from a negative, but that would be my guess.  I'm certainly willing to be corrected by authority.  But I think the plain reading of the text is to apply the generic rules for "blocking fire" regardless of relative elevation.