Never mind... I just realized you need to add the -depth switch to convert all of the various arrays of objects down the hierarchy. I used ConvertTo-Json -depth 10 and got what I needed.

Did you have any success exporting the profile to a portable JSON file?

What is the best approach to build a hardware profile of a standalone C-series? I'm using the IMC powertool "Get-ImcRackUnit" cmdlet and it might be missing some of the pcie adapters (I need to test further if this is an HCL or Powertool issue).

This response actually made it click for me. I wasn't including the "CompatibilityProfiles" part in my query.Thank you!