I have a Blue Card issued on (13-09-2018) and valid till (12-09-2022) with residence permit in Berlin. Employer name is not mentioned in the Blue Card and Zusatzblatt.
I'm discharged of my duties from previous employer and now I have an offer from another employer based in Nuremberg.
Should I take an appointment for "Change of Employer" process or "Registration of New employer" at the Ausländerbehörde?