In the past you could have done a lot of things to get procmon running in your App-V bubble. Modify your OSD file, or launch a commandprompt and fire it up.
There also was the /HookRegistry switch. Problem is that this switch isn’t working on 64bit systems anymore.
The good news is that there is an alternative, however for some reason it isn’t documented well. It’s even not visible in the /? box.
So here we go. What you need to run to get App-V output in your procmon capture is:
procmon.exe /externalcapture /noconnect
The externalcapture switch is what it’s all about. The noconnect just starts procmon without instant capturing.