The below response from Solarwinds Support solved the problem:
Are you referring to getting rid of the certificate error when you first load the console?
If so, the certificate that gets exported is a child certificate. So what you will need to do is click on the lock on your address bar and view the certificates and then select the certification path. Then select the top certificate and select view certificate information.
Then go to the Details tab and copy to file. Once you have that certificate you will need to have that signed by your internal CA and then installed on your machine to resolve the certificate error