System Information
Win 7 64bit / Nvidia Quadro 4000

Blender Version
Broken: Blender270a + daily Build

Short description of error
Sequencer do not sync cycles strips if objects are on different layer and scene

*test file*
http://www.pasteall.org/blend/28801

Exact steps for others to reproduce the error
-open test file / here are 3 scenes
-scene1 + scene2 render correct
-but sequencer render only last state (scene1 or scene2)

difference between scene 1+2 is only that one object on scene 2 was moved to another layer