Rust powder in A/C lines

I think some of the orange rust powder came out of both ends of the small line pictured. I don't really remember any coming out of the large upper metal line. Maybe it could just be trapped at the bottom of the evaporator? Or hopefully most was blocked in the TXV.

Since I'll be getting a new drier, what about that sensor attached to it? Do the originals hold up or is it best to get a new one?

Thanks