gencert does not add cert to database, but sign does

Maybe I am missing something, but I was wondering...
When I create a CSR and get it signed with the sign cli command the certificate is stored in the database (so the db connection seems to work)...but when I create a certificate/key using gencert it is not added to the database so revocation will be impossible.

I saw that there is an API endpoint "certadd" which stores a cert in the database. Is this the workaround for this problem?

Is there a way to call gencert and let cfssl store the cert in the db automatically without invoking the API?
Is there some logic I don't get why a certificate created like this is not stored in the db?

Thanks,
Thomas