The chronology of the post-war studies of the Assumption Cathedral was highlighted in the monograph “Assumption Cathedral” by the chief architect of the Kiev-Pechersk Historical and Cultural Reserve A.V. Sitkarova in 2000.

The first project to strengthen structures of the preserved part of the Assumption Cathedral was developed as early as 1945 and provided for the establishment of detaching structures to prevent the destruction of remnants of walls, ensuring the static character of preserved walls through the use of a system of cables, metal posts and anchors, leveling the upper deformed parts of the walls using a jack, filling cracks with cement mortar and restoring arches along the side walls with the help of special supporting scaffolding to transfer loads from Rittya first floor. The author of the project to stabilize part of the Assumption Cathedral was the engineer LK Lyubimov.

Proposals for the restoration of the eastern part of the cathedral with the use of a moruzannya, similar to the construction of plinths in the 11th century, in the complex with the restoration of the surviving John-Theological side-chapel, were put forward in 1946 by Professor L. G. Leontovich.

More serious proposals on the divisibility of the conservation of the ruins of the Assumption Cathedral with the possibility of their exposure appeared only after the petal research of the sights in the 60s of the 20th century and the dismantling of the dam in 1963 was completed. “The main purpose of the work was, besides the completion of the dismantling of the ruins of the cathedral, the study, conservation and museification of the preserved fragments of the monument, especially those that were most important for reproducing the architectural forms of the 11th century cathedral and studying its architectural evolution.”

During these years, there was a transition from purely conservation works to the solution of the complex task restoration of the cathedral.

In the years 1965-1967, project proposals were developed for the preservation of the remnants of the Assumption Cathedral with a minimum addition of new clutch of the surviving fragments only to the extent determined by the repair requirements. Later, a proposal was made to strengthen the existing part of the cathedral while restoring John the Theologian to build a new roof over the preserved part of the southern nave.

At the same time, the remains of murals were characterized as of low value and those that are not subject to conservation.