Hi,
If I'm understanding your question correct; you've restored a NSX Manager backup on a new NSX Manager appliance deployment and want to redeploy the NSX Edges from the backup configuration - because they are not deployed automatically when restoring a NSX Manager backup.
To redeploy the NSX Edges that you had in your previous environment, simply right click an Edge in the "NSX Edges" overview and choose either "Deploy" or "Redeploy" and the Edge will be deployed. Make sure you have the same computer/storage resources available though (same names), or update the Edge placement options in its settings first.
Hope that helps,