“Wa-ʿalayhi qaḍāʾ Ramaḍān” identifies an existing outstanding make-up obligation. The previous level distinguished death while an excuse continued from death after an opportunity for make-up; the extent of outstanding liability can depend on that difference.
Do not assume that every death automatically generates a fidyah for an entire Ramadan. Establish what days were genuinely owed before applying the bequest rule.