I am a Non-EU citizen and I am working in Germany for around 1 year 11 Months now. Now due to some personal reasons, I am leaving Germany. I have started with the De-Registration process (Abmeldung), but I have heard that I also have to inform the Foreign office(ausländerbehörde) as I have not completed 2 years on Blue Card. I tried to find information on Google regarding this but couldn't find anything concrete. If anyone has experience or been in a similar situation, it would be really great if you could share your experience. I am currently based in Hamburg.
I looked into a similar question How to inform foreign office in Germany regarding Blue card when leaving Germany? but couldn't find anything the answer I am looking for.