Replacing pendant but there are extra live wires
Connect your pendant to the leftmost and rightmost terminal in this picture.  Your pendant should have brown and blue wires that correspond.   If it has a yellow, green, or bare wire connect that to the corresponding large terminal at the top of the picture.
One brown/blue pair in the center set of terminals is power coming in, and another brown/blue pair is power going to the next pendant.  The third brown wire in the middle triplet goes off to the light switch, and the leftmost one is switched power coming back for the pendant.