Access to Envelope / Certificate of Completion

I’m looking for guidance on a situation involving an envelope that seems to have had its visibility restricted after I raised a concern with my company.

I originally signed a contract through DocuSign. Later the envelope no longer appears under my “Completed” documents.

However, I still have:

• A copy of the original contract I signed

• A copy of another version of the contract with a different job title

• Both documents show the same Envelope ID 

Since I no longer have access to the envelope in my DocuSign account, I’m concerned about how to ensure the evidence cannot be deleted or altered by the sender.

My questions for the community:

1. Is it possible for a sender to remove or hide an envelope from a recipient’s view after completion?

2. Does DocuSign retain an immutable audit trail even if the sender restricts access? (Certificate of Completion)

3. What steps can I take to preserve or verify the authenticity of the documents and the envelope ID?

I’m not asking for legal advice, just trying to understand how DocuSign handles envelope access, audit trails, and evidence preservation so I know how to proceed.

Thanks in advance to anyone who can clarify how this works.