The 'Swap with another node' function in the administration interface swaps two nodes (not subtrees).

When one of the objects (A) is a container, with children, and the other (B) is not, the result will be an incoherent state:
B will display a children count such as " Sub items ", but instead of the children will show the message "The <ClassName> class is not configured to contain any sub items."

Steps to reproduce:

• Create or modify a class, and uncheck the "Container" checkbox.
• Create a new object of this type (NodeA)
• Create a Folder object (NodeB), and add at least one child node to it.
• Swap NodeA with NodeB using the node's cogwheel > Advanced > Swap with another node.

Verify that NodeA should not have any children (not container) but does display a Sub Item count.

Note:

Its possible the same issue may be triggered from a script, for example; in which case the solution should ideally contemplate it as well.