I don't understand how you are having a problem with KiCad. The basic thing is you make a change to the schematic, recreate the net list, reimport the net list to the PCB editor and then you will see the change in the PCB.
I don't understand how you are having a problem with KiCad. The basic thing is you make a change to the schematic, recreate the net list, reimport the net list to the PCB editor and then you will see the change in the PCB.