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How do I "re-trust" a CA certificate that I clicked "delete or distrust"?

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I am doing some testing on a certificate authority. I clicked "delete or distrust" on the root ca certificate. When I tried to import the PEM file again I am told the file is already imported but its not listed under Authorities any more. How do I re-trust it?

I am doing some testing on a certificate authority. I clicked "delete or distrust" on the root ca certificate. When I tried to import the PEM file again I am told the file is already imported but its not listed under Authorities any more. How do I re-trust it?

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Do you have a file cert_override.txt in the Firefox Profile Folder?