I have been doing government audits of retirement plans for over 25 years. The technology has changed, and you can fax or email what the agent has requested. The problem that I’ve found with that, is that they’re always losing what you sent.
I have clients forward me the information that I send to the client, and then have the clients print out a duplicate to hand out in an audit. I recently went through an audit where the IRS agent didn’t have the ADP/ACP report that I sent him 6 times, including the information on refunds for ADP failures. He wanted to sock my client with an unnecessary $100,000 Qualified Non-Elective Contribution.