SSL Renewal but I do not have access to the keystore password.

SSL Renewal but I do not have access to the keystore password.

I need to renew my SSL certificate for service Desk, but I do not have the password to the sdp.keystore file.
The documentation states that I will have to start anew.

Is there a best practice for doing so?
Should I rename the current sdp.keystore to something like sdp.keystore.old?
And the recreate it?
Will that impact anything currently running?
Or could I create a keystore file named something else?

My apologies if these questions are rudimentary-I've never used a tool like keytool before to do this?

Thanks,

Tom
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