# Preserve Structure when Indexing Documents

Documents created by the Dynamics Connector are likely to have important information contained in the document structure (the relationships between pieces of information are represented by how the fields in the document are nested).

To index documents into IDOL Server in IDX format (which is the default), CFS must flatten the documents and therefore the structure and relationships are lost. To preserve the structure of a document when it is indexed, you can modify the configuration of your CFS so that documents are indexed as XML. In the `[Indexing]` section, or the section that contains your indexing settings for IDOL Server, set the parameter `UseXmlIndexing` to `TRUE`.

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