Under the US military government Yiwangjik was renamed to the Office for the Former Royal Family (구왕궁) on 8 November 1945 and on 8 June 1955 the Former Imperial Properties Affairs Office (구황실재산사무총국). On 2 October 1961 this office became the Bureau of Cultural Property with responsibilities broadened to cover all former dynasties rather than just Yi Dynasty affairs. On 1 January 2019 the administration of Yi Dynasty properties were once again separated into their own organization, the Royal Palaces and Tombs Center (궁능유적본부) of the
Cultural Heritage Administration. There was no systematic preservation of the imperial family's movable property (furniture, pottery etc) after WWII, and they became scattered amongst the Yiwangjik descendant organisations and palace storerooms. To gather up the dispersed relics the Cultural Heritage Administration established the Palace Relics Exhibition Hall (궁중유물전시관) in 1992, which later became the
National Palace Museum in 2005. Imperial rites such as the
Jongmyo Daeje are now managed through the
Jeonju Lee Royal Family Association, which is a private organisation managed by the former Imperial family's descendants. Nonetheless Jongmyo Daeje continues to be held at the
Jongmyo site which is now under the management of the Royal Palaces and Tombs Center, with the music performed by National Gugak Center musicians. Other institutions connected to Yiwangjik include: • Yiwangjik's Music Department merged after the Second World War with other folk music organizations to form the
National Gugak Center in 1951. • The
Jangseogak (장서각, 藏書閣), or library, of Yiwangjik was transferred in 1981 to the
Academy of Korean Studies. • The Imperial Museum (Jesil Bakmulgwan, 제실박물관, 帝室博物館) established in 1909 during Sunjong's reign continued under Yiwangjik management (with name changes and mergers) during the Japanese period, continued after 1945 as the Deoksugung Museum, and was merged into the
National Museum of Korea in 1969. • The Yiwangjik Art Manufactory (이왕직미술품제작소, 李王職美術品製作所), established in 1908, closed in 1937. However its existence ensured the transmission of Korean fine art techniques from the Joseon period to the modern period, and many of its artisans were given the Important Intangible Cultural Property designation after Korean independence. == Heads of Yiwangjik ==