We used to call the capitol of China “Peking.” I’m not sure when or why, but for years has been called “Beijing.” Yet, in a Chinese restaurant one still orders Peking duck.
We used to call the capitol of Ukraine “Kiev.” Now, they call it Keev. At least that is what it sounds like, and I think it is now spelled Kjiv. Do they still call it Chicken Kiev?
Most news reporters seem to say "Keev," which is a mispronunciation. In Ukrainian, it is more like "Kee-iv." Not a long Keeeee, but a clipped one. Or, Keeyiv. It's hard to write it the way it's pronounced.
That aside, it should be OK to say Kiev. We don't pronounce "Paris" as they would in France, nor do we say Lisboa for Lisbon, etc., etc.