Hi MrJR,
to do so you will need to change the calibration.xml file. The file can be found in C:\Program Files\Capturing Reality\RealityCapture.
There you can find the wanted option or create your own which will have replaced Y and Z values.
Like:
<format id="{B3EE1544-1D64-4C22-A47D-FC9F78C107B7}" mask="*.csv" descID="8367" desc="Comma separated, Name, X, Z, Y, Omega, Phi, Kappa" writer="cvs" requires="component">
<body EulerFormat="xyz">#cameras $(cameraCount)
#name,x,z,y,omega,phi,kappa
$ExportCameras($(imageName)$(imageExt),$(x),$(z),$(y),$(omega),$(phi),$(kappa)
)</body>
</format>
But there could be also issues with omega, phi, kappa, probably those values will be needed to be changed accordingly. Also, there could be bug for exported OPK values.
Where are you trying to import camera positions?