Thanks, @Kermit750 . I'm not sure if htis applies to me, because this says "more than a year"...but I was only there one year. It is showing on my undergrad transcript, just not in LSAC. How confusing!
I think you are supposed to get a transcript for any place you took *any* classes for credit. I had to request a transcript for 1 class I dual enrolled in during high school. So I would suggest starting the process of getting that transcript pretty soon.
They look at your transcript. So an upward trend is better than consistently performing at a low level. But they certainty aren't going to treat you the same as someone else that held a consistently high GPA.
I'm pretty sure admission committees take a good look at each applicant's transcript, lest they admit only those whose coursework consists mostly of easy or introductory classes. But in this case, I am inclined to think you worry too much.