What if you take a nerve which end in the arm and change it with one in the leg. If you touch your leg do you feel the sensation in your arm ?

leaving aside nerve transplants are still in their infancy and little of what you describe is technically possible at present, the answer depends on which bit of the nerve you move where.

Remember peripheral nerves send information to the spinal cord and thus to the brain. if you somehow moved the nerve input from a foot nerve and grafted it onto the inputs from the arm into the spinal cord then the expectation would be that stimulating the foot would be perceived as signal from the arm/hand.

also take at look at the link below which in part addresses the ideas you have suggested
https://en.wikipedia.org/wiki/Preferent … nnervation