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Replace shift registers with tunnels when you no longer need to transfer values from one loop iteration to the next.

Complete the following steps to replace shift registers with tunnels.

1. Right-click the shift register.
2. Select Replace with Tunnels from the shortcut menu.

If you replace an output shift register terminal with a tunnel on a For Loop, the wire to any node outside the loop breaks because the For Loop enables auto-indexing by default. Disable auto-indexing on the tunnel to correct the broken wire.