The files get copied to a temp directory. But now the new openssl and the old libssl get copied. Code: cp /usr/lib/libssl.so.0.9.8 /tmp/disk/usr/lib/ /usr/share/backupmenu/extrafiles.tar.gz has a filelist.txt inside, which list copied files and mounted folders. In principle you need to remove the old libssl library and add the new one.
cp /usr/lib/libssl.so.0.9.8 /tmp/disk/usr/lib/
cp /usr/lib/libssl.so.1.1 /tmp/disk/usr/lib/ cp /usr/lib/libcrypto.so.1.1 /tmp/disk/usr/lib/