At $50 a pop, I LOVE to recycle traction. Same process would apply for swapping out old used traction.
The glue on the bottom of traction will soften with heat and then with slow steady "pulling" it will come up.
I use a hair dryer to heat the traction. Focus on one section at a time. I like to work from right to left. The heat will transfer across making the next piece easier to heat and remove.