Wow...that's exactly the problem. I added a Dump after the second foreach loop, and came up with this:

$VAR1 = {
          'en0' => 'ent0',
          'en1' => 'ent1' 
        };
$VAR1 = (
          'ent0',         
          'ent1'          
        );

Thanks so much! That's a heck of a caveat...err...feature to have.

P.S. The following is the docs on the foreach loop that are in my Camel (Ver. 1):

The foreachloop iterates over a list value and sets the control variable (var) to be each element of the list in turn...

I guess that implicitly states what you said, but it's not extremely obvious...