Sonar X2: Take Lines : missing functions

Hello everybody 

I've just bought Sonar X2 and the news take lines are wonderfull. However there is two missing functions : 
- Delete empty lines
- Ré-arrange lines

These functions was available on Sonar X1 and and was very very useful. Furthermore, those functions appear in Edit > Preferences > Keyboard Shortcuts but when i use them, nothing happen. 


Can somebody help me ?


Thanks

Rearrange by click dragging.

I beg CW please don't bring back the completely mess the layers up into some arbitary order rebuild layers function.

Yes you can delete line, but the function i mean automatically delete 'empty' line. 
It's the same for re-arrange : When i do several take, Sonar put each on a new line. At the end there is 36 lines, and only one little clip on each line.