Bug 29698 drag and drop of java files between packages in package explorer doesn't work
the <preview> <ok> <cancel> dialog shows up, but <ok> has the same effect as <cancel> and <preview> would only show movements of files and no changes in imports of other java files. on <ok> in the preview it only moves the file(s) (as indicated ) without changing referencing imports.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/reorg/JdtMoveAction.java
private static final int PREVIEW_ID= IDialogConstants.CLIENT_ID + 1;
		private MoveRefactoring fRefactoring;
		private Button fReferenceCheckbox;
		private Button fQualifiedNameCheckbox;
		private QualifiedNameComponent fQualifiedNameComponent;
		private Button fPreview;