What if you accidentally forgot a sin during Confession?

[Jack3]

Title says all

[aussie_aussie_oi_oi]

Catholic Answers:
It was absolved already. If it is a venial sin, you do not need to confess it. If it was a mortal sin, it was absolved, provided you at least implicitly intended to mention it if you had remembered it. What this means is that you confessed all known sins and would have confessed whatever others you committed had you recalled them. So if you now recall a mortal sin, mention it the next time you go to confession.

[VeryTas]

Catholic Answers:
It was absolved already. If it is a venial sin, you do not need to confess it. If it was a mortal sin, it was absolved, provided you at least implicitly intended to mention it if you had remembered it. What this means is that you confessed all known sins and would have confessed whatever others you committed had you recalled them. So if you now recall a mortal sin, mention it the next time you go to confession.

Wait. If it was implicitly intended enough in the first confession to have been absolved, why "mention" it in the next confession? Is it being confessed again? Is that scrupulosity?

[Obi-Wan Kenobi]

It's not scrupulosity. I'm not sure I can articulate the "why" behind the answer, but it is correct that you must mention it at your next confession.

[Jack3]

Thank you