Must one who unknowingly breaks their fast while making up for Ramadān's missed days complete that day's fast or break it?

Scholars have mentioned that the conditions for invalidating the fast in Ramadan are that the one who commits an act that breaks the fast must be knowledgeable, not coerced, and mindful. Therefore, if someone who is forgetful, inattentive, or ignorant commits an act that breaks the fast while fasting, their fast is not invalidated, based on the Prophet’s (peace be upon him) saying: "Verily, Allah has pardoned for my Ummah their mistakes, their forgetfulness, and what they are coerced into."