We have one DOCX which is containg word/stylesWithEffects.xml (when we unzip it). While creating the Document instance and saving it back to file system, we are noticing that stylesWithEffects.xml is not in the saved document. We assume stylesWithEffects.xml could contain some styles definitions to handle compatibility issues. We also think stylesWithEffects.xml is created when we create some style that is based on feature in newer version but not in earlier versions of MS Office. So given all this we assumed Aspose should not miss this while creating the Document instance of it. The mapping to it is not present is _rels/.rels file in the saved document while that was there in original doc. Attaching the original doc and output doc.