Additional mongo json properties show as null in graphql query, despite updated schema

Working with Data
2

Here is the original query:

query {
	nav {
		_id
		key
		pageId
		children {
			alternateurl
			contentType
			key
			naame
			pageId
			pageLevel
			showonnav
			showonsitemap
			title
			url
			children .... etc
		}
	}
}

Here is the updated query:

query {
	nav {
		_id
		key
		pageId
		children {
			alternateurl
			contentType
			key
			naame
			pageId
			pageLevel
			showonnav
			showonsitemap
			title
			url
			infoItem {
				itemImageId
				itemLinkObjectId
				itemLinkText
				itemLinkType
				itemLinkUrl
				itemText
				itemTitle
			}
			children .... etc
		}
	}
}

the infoItem section, which is the new section, is only at one level, and does not appear at the lower nested children