An interesting sidebar to this issue is the circumstances of KR's eldest son, John (Ioann) Constantinovich. Ioann was born in July 1886, 9 days before his cousin's Ukase. So, he was born a grand duke of Russia, and in a circumstance unprecedented in Russia, was stripped of this title scant days later, when he was downgraded to a Prince of the Blood Imperial.
His father, Grand Duke Constantine Constantinovich, was known to be quite upset by this decision by cousin Alexander III, but could not change what the Emperor had ordered.
Ironically, the Constantinovichi, who once stood a chance of becoming the largest of Romanov branches (something A III undoubtedly was worried about as shown by his Ukase) became extinct in the male line upon the death of Ioann's only son, Prince Vsevelod Ioannovich in 1973.