Naturalizing to USA

Hello. I’m Jürgen! I am local to Boston, and have made a meeting with my consular, but they won’t have room for several months.

I’ve gotten an opportunity to naturalize to the USA for a great career opportunity, obtaining a security clearance and engineering! However, I do not want to lose my German citizenship. Under my nose, I learned Beibehaltungsgenehmigung may not be necessary any longer? How can this be true? I am concerned, because I heard that the USA oath includes swearing off any loyalty to other countries, which would be Germany in my case.

I would prefer to stay German. My consular will hopefully be able to answer this for me, but my ceremony is in 2 months and I want to be certain I will not lose my German. Thank you all.