Missing wikiquote backlinks on plwiktionary

SQL

SELECT
	wiktpage.page_id AS wikt_id,
	qpage.page_title AS quote_title
FROM
	plwikiquote_p.page AS qpage
		JOIN plwiktionary_p.page AS wiktpage ON
			CONCAT(UPPER(LEFT(wiktpage.page_title, 1)), SUBSTRING(wiktpage.page_title, 2)) = qpage.page_title AND
			wiktpage.page_namespace = qpage.page_namespace AND
			wiktpage.page_is_redirect = qpage.page_is_redirect
WHERE
	qpage.page_namespace = 0 AND
	qpage.page_is_redirect = 0 AND
	NOT EXISTS (
		SELECT
			NULL
		FROM
			plwikiquote_p.page_props AS qpprops
		WHERE
			qpprops.pp_propname = "disambiguation" AND
			qpprops.pp_page = qpage.page_id
	) AND
	NOT EXISTS(
		SELECT
			NULL
		FROM
			plwiktionary_p.iwlinks AS wiktiwlinks
		WHERE
			wiktiwlinks.iwl_title = qpage.page_title
    ) AND
	EXISTS (
		SELECT
			NULL
		FROM
			plwiktionary_p.categorylinks AS wiktclinks
		WHERE
			wiktclinks.cl_to = "polski_(indeks)" AND
			wiktclinks.cl_from = wiktpage.page_id
	)
GROUP BY
	quote_title;
SQL

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