Hi Wisdom,
Generally speaking, deemed rehabilitation falls under R18(2). There are not many case laws related to deemed rehabilitation, but consider the following: Bello v. Canada (Citizenship and Immigration), 2023 FC 1094
Finally, please read my article on this topic:
Deemed Rehabilitated in Canada – Deemed Rehabilitation
If you are dealing with a complicated case, consider co-counselling with me or booking a mentorship session.
Good Luck
Al