Given this starting scenario in 10.2.0-alpha-15,

1. Pairing (1, 2); (1, 3); (1, 4); (1, 5) just shuffles the token area down the line, removing the previously added token signal. Probably pretty confusing if you don't have goggles on & the token signals are in a realistic setup.
2. (2, 1); (3, 1); (4, 1); (5, 1) links nicely.
3. (2, 1); (3, 1); (1, 4) breaks the token area in half.
4. Clicking on a meshed up token signal, and then abandoning the survey by sneak-clicking the ground leaves the token area in a blinky yellow state. (Double-right-clicking any token signal restores them.)

I did say it was wonky!

The problem is I don't think I have a backward reference to the signals already in the Token Area. So there is no way I can go back and update them. So the pairing always adds the first signal clicked to the token area of the second signal clicked.