That is completely “Logical” (sorry for the pun 
)… using “Value 2___Set to fixed Value___127”, that is converting also the desired CC#64=0, on pedal up (for “note-off”) into a(nother) CC#64=127. If you are certain that pedal down is transmitting CC#64=127 anyways, you don’t need that 2nd line at all.
Whereas using “Multiply” x1.0000 leaves both 127 and 0 intact (and, like I said earlier, as an added bonus, can also be used to scale the velocity (127 x0.5000=64, and 0 x0.5000 still =0 ).