I suspect that there is a problem with SD card permissions, especially if you restored a backup from the previous device. Try going to CC's Settings / Formats and Folders and change the folder (or folders) to what they are now. By "change" I mean go through the whole process of tapping on the folder, getting into the Android file chooser, navigating (if needed) to the current folder, and tapping Select. That will force Android to verify permissions and force CC to ask for the necessary "magic key". CC will notice that the source and destination folders are the same, and won't attempt to move the books.
If that doesn't fix it then please send me a debug log as described
in this FAQ. Please erase the multipie.co.uk address.