Subscription not working for Delete Action

Summary: The requirement is to set up a subscription between FCCS and Planning viewpoints for common sub hierarchies as part of Alternate hierarchies. Both the FCCS and Planning Viewpoints has common Node type qualifier. Only the bottom nodes have prefix as defined in the node type qualifier. Hence, when I defined in the Node type converter as Copy operation, it gave an error saying it is unable to detect the parent as it was searching for the parent with Node Type qualifier. Then I wrote a transformation logic on Core.Name property in Node Type converter. The Subscription started working as desired when I add/move a node. However, the subscription is not working when I delete.