The objects generated using Liquid XML Objects can be cloned (deep copied) using the helper Serializer. Clone<T> Method. This produces a deep copy of the source object.

The source object must be an object generated with LXO (i.e. it must be attributed with LxElementDefinitionAttribute Class or LxCompositorDefinitionAttribute Class.

using (XmlReader xmlReader = XmlReader.Create(@"MyXmlFile.xml"))
{
    var myThing= serializer.Deserialize<MyXmlThing>(xmlReader);
    var myThingCopy = serializer.Clone(myThing);
}