“If you have a backup of your certificate's private key, you can transfer the backup to a new computer and open the backup to run the import wizard. If you do not have a backup of your private key, you need to issue a new certificate.”
“If any of the information on the certificate has changed, a new certificate must be issued. It is not possible to change the entries in the certificate.”
“The private key is available only to the owner of the certificate, if the private key of the certificate stored in the computer storage (.PFX file) has not been backed up, from which the certificate can be re-imported into the storage (private key stored in the MS Windows/MacOS storage), the only option is to request a new certificate.”