Drag-and-Drop of Tree Nodes 

You can drag-and-drop nodes to move them within a tree, with certain restrictions. When you drag a node to a new location in the tree and release the mouse button, a context menu pops up for you to indicate whether you want to insert the node as a sibling or as a child, or alternatively, if you want to merge the two nodes, as shown in the figure below.

You can bypass the pop-up menu by holding down the appropriate keyboard shortcuts when you drop the node onto the target node, as listed in the following table.

Operation	Keyboard Shortcut
Insert as Sibling	Hold down the Shift key as you drag-and-drop
Insert as Child	Hold down the Ctrl key as you drag-and-drop
Merge Into	Hold down both Ctrl and Shift as you drag-and-drop

If any built-in constraint prevents the move you want to make, the drop command may be unavailable or an error message may appear to explain the reason you cannot complete the action. The restrictions on moving and merging nodes are discussed in the Hierarchy Mode sections.

Sibling nodes in a tree cannot have the same name. When you drag-and-drop a node to move it in the tree, MDM automatically renames it to Node Name (n) if its name would be the same as that of an existing sibling node in the new location (where ‘n’ is the first available numeric value that will avoid a conflict).