File Names not Visible on iPhone

I have two questions actually: I recently started adding Word or Excel files to OO. Where are these files saved?

My second question is about the file names. Why is it that I cannot see the file names? When I open OO on my phone, I see the Scrivener icon, and the documents were not from Scrivener. However, if I open the document from OO, they get saved all over my phone: some into Dropbox, some into Scrivener. I keep a copy of these documents in Devonthink, and I am fine having them only in DTPO and OO, but now I feel scattered having them all over the place. Any suggestions? My biggest request though is to be able to see the file name.