New Post: How to import home-made packages into new WSUS ?

Update : Yes it seems to work when I add the old wsus certificat to the new wsus server in 2 libraries :

1. export the old packages
2. export the old wsus certificate
3. add the self-signed WSUS certificate to the Trusted Publishers Store and the Trusted Root Certification Authorities store on the Update Publisher machine.
4. import all the packages
5. resign all the packages
6. remove the old certificate via mmc > certificates