Edit .c3d Files

Hello Everyone! I have a question. How can i edit a c3d.file? If i import a file in blender i can´t edit all empties at the same time! And if i want to edit all empties at the same time i can´t see something in the Ipo-Editor! Can somebody help me?

Sorry for my bad English :wink:

Empties are individual objects, they can’t be joined to create one single object.

So i must edit every single empty?