Import OmniGraffle file

[Claus Atzenbeck]

Hi,

I have two OmniGraffle files, each with several canvas. (I'm using
OmniGraffle Pro 3.1 rc1.)

Is there a easy way to import all canvas of one file into the other? Or
is the only way copy & paste for every canvas?

To the OmniGraffle people:
If inserting canvas of another file does not work (what I guess, because
I couldn't find it anywhere), then I would like to suggest this as a
feature for an upcoming version.

Greetings,
Claus