import animation channels independently I wonder if I can import keyframes (with a python script) only as x keyframe. It seems like I can only set the whole object location at a keyframe, but I want only set the x location, since y location may have different keyframes. Is there any solution for this? 
I cant get it to work with object.insert_keyframe(data_path='location', frame = key.frame)

Otherwise I don't understand why the channels can be exported independently.
I already tried to import the specific x value by setting the current frames to the keyframe and use the objects frame location for y and z value.
Select the animated object, in the dopesheet select all keyframes you want to copy, Ctrl C to copy in the clipboard, select the new object, select the channel to be animated, set the cursor to the first frame where you want the copied animation to start, Ctrl V to paste the single animation channel.