Schedule Change for Second Semester PLS HELP!

Hi guys so I got accepted by UC Davis last week. The problem I have now is that the course schedule for the second semester of my senior year is different from the one I submitted with my application. I was planning on replacing the astronomy class with online AP Microeconomics when I was filling out the application and my counselor told me it would work, but when second semester started, she said that astronomy was a full-year class and could not be replaced and I could not take online AP Microeconomics. Is my admission going to be canceled because of this change?

You will not be rescinded as long as you email admissions about the schedule change. I would follow up with a phone call to make sure your schedule change is noted and received.

Thank you very much!