I have also found that Editorial can add individual Unix-format lines in an otherwise Windows-format file, which will confuse many programs. I may need to stop using Editorial as a result.
A related issue with Dropbox synchronization is that if you view a file and do anything that makes Editorial think you are editing the file (such as set the cursor location), it will save a new version of the file and cause Dropbox conflicts. Is there any feature that would allow you to turn "editing mode" on and off so that this is less likely to happen?
Moving files to and from Dropbox does seem to cause problems and there are already some workflows to do this. You could use your workflow to move your files into dropbox anywhere, then use editorial set up a folder structure in dropbox and to move your files into this structure.
Otherwise, you can find a parent directory in python like this:
p, n_e = os.path.split(full_path)
x,d = os.path.split(p) # d is the parent directory
And there is a function os.walk that might help you replicate the file structure; I've not done this.
I didn't see the two different tabs at top of the file browser side menu, and I realized I could create a new file in either "Local" or "Dropbox". But even with that there is no way to move a file that was started in Local to Dropbox, or vice-versa. But some searching led me to a couple of workflows (but of course) that will do that for you. I ended up with Smart Move - Updated but there are others.
Still not as seamless as iCloud sync is say with iAWriter, but it does have the benefit of forcing me to write on my iPad more and of course all the workflows (and workflow possibilities) can't be topped.