In the Editor, use the little grab handles to the left or bottom of the grid. Select one that is underneath or left of a shunted block and drag it to where you want the shunt to move. The other blocks will move to fill its space.
Safety tip: On more complex layouts the editor might break connections, so take note of their positions prior to moving. Typically, I'll take a snapshot (the Camera icon in the editor) before I make any changes, and then whenever I make a significant change so I can revert between changes and compare the sound.
Wishes exist for the ability to move/copy/paste in groups but we don't know if that'll happen. "It's complicated."