Restoration of 3scale configmaps fails silently

Current behavior:
The restoring guide doesn't mention that in order to restore the secrets and configmaps in another environment / project you must delete the following metadata:

• For secrets, you must delete .metadata.creationTimestamp, .metadata.namespace, .metadata.resourceVersion, .metadata.uid
• For configmaps, the same as above plus . metadata.ownerReferences.
  If the metadata is not deleted, the configmap restoration fails silently.

These steps are not mentioned in the documentation and it creates confusion to customers. 

Expected behavior:
Update the backup and restoring guide with the commands shown in this KCS for the configmaps and secrets which doesn't copy the metadata.