We're using the FM SharePoint Connector with unstructured documents.
When we check out a book and select "Checkout all dependent files" (for example, to rebuild the book), all the dependencies are checked out in SharePoint, including all the chapters and all the graphics files used in the chapters. The book and chapters are also copied to the local folder where Framemaker stores the working files (C:\Users\username\AppData\Roaming\Adobe\FrameMaker\SharePoint and so on -- I call this the "Adobe Secret Sandbox.") But the graphics files called by the chapters are not copied to the working folder.
As a result, when we try to open a chapter or process the book, we get the familiar "can't find the grapihcs" dialog asking for a new path, and the path we need to supply doesn't have the files.
We tried right-clickng the book in the Connector and using "Download dependents" to remedy this, but it didn't work. We have to do this manually for each chapter. (Another alternative might be to copy the graphics folders and files directly into the Adobe Secret Sandbox, but we haven't tried this.)