5.  When a church or other building used for religious worship has ceased to be used as such by reason of the land forming the site thereof having been acquired or appropriated under the Act, the appropriate denominational authority shall, except where the marriage registers are dealt with under Section 62 of the Marriage Act, 1949, forward or cause to be forwarded the current marriage registers kept for the building to the Registrar General in order that they may be formally closed and one of them retained by him or transmitted to the appropriate denominational authority for retention and the other forwarded to the superintendent registrar of the registration district concerned; and all other birth, baptismal, marriage, burial or death registers, if not removed from the building by the said authority for retention by that authority within three months of the date of acquisition or appropriation, shall be forwarded by the acquiring or appropriating authority to the Registrar General.