Splitting a section in sequencer retains keys

This might be intended but I noticed that a split section has all the keyframes that the original section had.

1. Open any project
2. Create a level sequence
3. Open the level sequence
4. Add a cube to the sequence
5. Right click on the transform section
6. Uncheck Is Infinite under Properties
7. Expand the transform section to frame 100
8. Key Transform Track at frame 100
9. Scrub to frame 50
10. Right click on the transform section
11. Select Split under Edit
12. Drag the section on the right past frame 150
13. Drag the first section's right handle past frame 100

Result: Keyframes appear on the split section