Hello, I had a very quick question while filling PMP Application. I realize that I do have a couple of projects (each spanning more than 1 year) for which I am unable to reach out to the Supervisor.

I will still be eligible for 4500 hours without reporting these projects on my application. Can I still go ahead and submit the application without these projects? or would these gaps of 1/2 years in experience on my application because of absence of these projects be red flags for a potential audit. Kindly assist!