If you want to move 2 and 4 (without 3) you will need to perform multiple operations. Bike doesn’t support discontinuous selection. But if you internalize Bike’s keyboard shortcuts those multiple operations are quite quick. If I want to move 1, 3 to a new location I would probably:
- Place my text cursor in row 3
- Hold down Control-Command
- Press Left followed by Up arrows
- Then I have 3 directly following 1
- I select them both and cut
- And finally I move cursor where I want to move them and I paste.