Customer got a new microwave. The old outlet was behind the microwave and she needed a new one installed in the cabinet above. I had no other choice but to leave a junction box behind the microwave and run a wire from there up to the cabinet. There is notation on the back of the microwave outlet post stating where the junction box is. The junction box will be hidden behind the new microwave. I dual functioned the circuit. I also replaced 2 GFCIs in the kitchen. Everything is working properly.