Have you tried to use the 'upload and use saved key'? It actually may work.
Before you do that, export your current certificate from the Certificate Store, and have it password protected so you get the private key with it. You will get a .p12 if I'm correct.
In case upload with the saved key does not work, you can extract the current private key from the export. OpenSSL will do that, but other methods will work... I just would not use any cloud/internet service for it as they will have access to your private key. Then either create a new .p12 with the existing key and new cert, or create PEM for both the key and the cert and upload those.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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