The scientific research of the monument permitted to revise the date of its construction. The restoration project was worked out and the reconstruction model was made. In 1938 – 1940, the Church was cleared of additional structures. In 1960, when the gabled roofing and the missing shapes of the belfry were reconstructed the original appearance of the monument was completely returned. As there were no documents for the reconstruction of the original helmet-shaped cupola, the dome of the 18th century was basically repaired and preserved. The reconstruction model of the Church of the Holy Spirit is displayed at the architectural exhibition.