I had obtained my bachelor degree with first class of honor then I pursued my master studies in France. During the first year of my master (M1), I had pretty bad performance. I failed a course but I passed the semester since my average grade is higher than 10/20. Also, there was a project which I barely passed. I applied to another school for M2, I passed it with good grades (in french standards).
If I apply for a PhD, is deliberately hiding my M1 grades a violation? Given that M2 GPA is independent of M1, I could've been admitted directly into M2, and M2 courses are more geared towards research topics while M1 consists, mostly, of general courses.