Encryption: how to import the pgp backup back to the smart card?

I generated a backup copy of my master key and 3 secondary keys in these files:

gpg.conf
mastersub.key
openpgp-recovs.d
private-keys-v1.d (contains 4 .key files)
pubring.kbx
random_seed
reader_0.status
sub.key
tofu.db
trustdb.gpg

How can I put them back on my smart card (yubikey)?