[lmm]

You have a single filesystem, so maybe you can open the same document in both one after another to work on the parts that need D and the parts that need C. Of course this relies on having a common format, but in the local-apps world we mostly have those, whereas in the SaaS world we don't even have a filesystem to share.

[marvy]

Ooh, good point. Import/export kind of does the same thing, but much worse I guess.