Adobe 6.0 Standard - reissue of signing certificate for signing

Question

I have a problem where an employee re-applied for their PKI (Private Key Identifier) used for signing. They were having problems with their card and needed a new one.
Now all of the old documents that were once certified and signed, Adobe says under Signature Properties: Document certification is INVALID
- The document has not been modified since it was certified
- The signer's identity is invalid because the signers Certificate has been revoked
How do I handle lost or stolen PKI cards, or employees who have left the company. We handle all certificate authentication internally. What becomes of all the old documents that no longer have valid signatures? Is there a way to recognize the old certificates as valid?

Answer 1

Possibly when applying for the PKI again you have the choice of
whether the old one is revoked. If, for instance, it is based on a
password that has been exposed, or a hardware card that is lost, it is
very important that ALL documents be revoked, because there is no way
to tell the difference between those validly signed, and those later
fraudulently signed.
Hopefully someone else will have more specific advice for this case.
Aandi Inston