Why did He Lu and Shen Lanni's rank of major general in Fire Phoenix drop to that of special forces?

He Lu is the vice captain of the brigade health team, a military doctor and a field officer, so she has always had the rank of captain, while Shen Lanni and the art troupe are civilian. Shen Lanni didn't give specific information. It's unclear, but when Tang Xiaoxiao returned to the Art Troupe to go through the transfer formalities, the post signed by the political commissar of the Art Troupe gave a close-up, which said that her level was civilian level 8, and this level corresponds to an active officer.