To remove a mapping rule that has a link from source to destination
node:
Procedure
Delete the mapping rule in one of the following ways:
Select the link for the mapping rule and press Delete.
Right-click the link and select Delete Mapping.
The Mapping Editor prompts you to
confirm the removal if the mapping rule you select links occurrence
property nodes. Removing occurrence mapping rules also removes all
the mapping rules for descendant nodes within that recurring structure.