The metadata stream should be the same for both P and PsF output but it could be that the QTake software or the hardware you are using to read the signal (Aja card) cannot read the metadata off of a P stream.
Just so you know, there is not quality difference between the P or PsF signal, just a difference in how the image is transmitted and displayed. My suggestion would be to use the PsF output option and then query QTake about this issue.
I asked this question because whenever I change camera output to P signal then QTake operators are not getting REEL and TAKE information from camera. I was curious if camera is not sending that information or software is not reading it from P signal.
PsF signal seems to be working fine with current QTake software.