How to propagate a track to the IP and to the calorimeter surface

Hi all,
I am working with genfit to fit CLD tracks and I managed to create edm4hep::Tracks with two TrackStates: at first and last hit. In ILCsoft, I know that the trackState IP is calculated by propagating the track on [an additional surface within the beam pipe](https://github.com/key4hep/k4geo/blob/016b4fc408c98c217318141d0ef83cafa556cf1f/detector/other/Beampipe_o1_v01_geo.cpp#L624-L629). I wonder if it is possible to do the same with an edm4hep::Track with only two trackStates defined.

Thank you!

Andrea

Start with the linked k4geo Beampipe_o1_v01_geo.cpp surface definition and review how genfit and edm4hep::Track represent the two existing track states. The issue names no CLDConfig file or test, so first identify the relevant propagation entry point. Done means establishing whether propagation to the IP and calorimeter surface is supported and documenting the required procedure or limitation.

Written by the indexing model from the issue text.