Mid speakers wont play while backs are cut?

[Willkas]

So ive got 2 in the front 2 in the mid seat n 2 in the back, i cut the back ones and now i only get output from the fronts. if i connect the back ones again do the mids start workin?

[Willkas]

i also tried fade and i can tell its going to the back but theres no output caz of the cut