Unable to drag a file to the computer from the File Manager in BlackBerry Blend
When attempting to drag a file from the File Manager in BlackBerry Blend to a location on the computer, the file is not copied and no error is displayed.
This behavior is expected, as this functionality has not yet been included in BlackBerry Blend.
To save the file to a location on the computer, right-click the file in the File Manager, and choose Save As. Note: This behavior may also occur when attempting to move a folder from the desktop to the BlackBerry Smartphone.
http://www.blackberry.com/btsc/KB36316