Distributed Components in QPSS Shooting Engine

I see the following error when I am running QPSS while having multiple n-ports

  ERROR (SPCRTRF-15161): Distributed Components are not supported directly for Pdisto analysis with Shooting engine. 1) Firstly, it's recommend to use Harmonic Balance engine for Distributed Components; 2) Or else, for this case and with Shooting engine, try the Rational Fitting Technique(set interp=rational) for NPORT components.

I saw a relevant post but for PSS 

PSS shooting with s-parameter file - Custom IC Design - Cadence Technology Forums - Cadence Community

My question is do I need to change one by one on (maybe there is a smarter way) all n-ports to rational and the options for interpretation methods are linear, spline, and bbspice, which one corresponds to rational? spline and bbspice I suppose?

Spectre 21.1.0.389.isr8