Hi @pberta,
this is a small addition to !47274 (merged). @nstyles asked how can it happen that a track without any perigee is created. The answer is that inside the createStandalone method the perigee parameters are reevaluated by extrapolating the old one back and forth through the calorimeter. If the extrapolation ends in the void, then the track is created. I added an additional check on the existence of valid parameters before the new TSOS are assembled.
Closes ATLASRECTS-6621