System Information
Ubuntu 14.04

Blender Version
Broken: 2.71 and 2.71.3 daily build from 2014-08-06
Worked: (optional)

Short description of error
When crossfading audio strip with already existing volume curve wrong handle is inserted into fading out strip.
It can be seen at the green curve at screenshot. It should start fading out from 1 (last handle value before fading out)
but it starts from 0.5 which is the first handle value for the strip.

Exact steps for others to reproduce the error
To reproduce insert audio strip, duplicate it two times and then crossfade first and second strip, next the second and third strip.