Are copper wires required for button function?

The flex cable (connecting the power button with the volume up and down buttons) that is also connected to the wireless charging coil has been severed. Upon attempted replacement of said flex cable, I discovered that the existing severed flex cable is connected to small copper wires attached to the wireless charging coil. If I sever those wires and just replace the flex cable, will the buttons be operational? Note: I can do without wireless charging as long as I can still charge the phone via the charging port.