Franchise player sent to juniors automatically

Hi!

I traded Luke Hughes and draft picks for the first overall and drafted McKenna. He was 85 at the start of the preseason and I put him on the first line to see how he plays. I have ”head coach edits lines” off but somehow he got sent to juniors and my lines were modified and I didn’t notice until the start of the season because I just wanted to quickly sim the preseason.

I’m just wondering how this is even possible when the head coach isn’t supposed touch my lines. But more importantly I’m wondering if I have to go back to my last save which is literally last playoffs or if he’s still gonna develop well in juniors. My squad is just pretty weak for the year without him. He also went down to 80 ovr for some reason.