Does the homeowner need the original FEMA Engineered Flood Vent Certification?

Many people have asked if the homeowner needs the original Engineered Flood Vent Certification when using flood vents and applying for flood insurance. My answer is no. I have relied on NFIP Underwriting Bulletin , dated October 23, 2008 for my answer. "For engineered openings designed for installation in a specific building, a copy of the certification is required."  Does anyone have any additional information from FEMA or NFIP on this topic?