Try to export ODB++ data from Altium and import into Hyperlynx.
The problem with odb++ is the pin map,
In odb++ file,
# CMP 1
CMP 85 11.8799213 -5.1072834 180 N U423 TPS7A8300RGRR ;0=1,1=0.0394
TOP 0 11.9478347 -5.1466535 180 N 132 6 U423-1
TOP 1 11.9478347 -5.1269684 180 N 0 1552 U423-2
while import into Hyperlynx, it recognize as component U423, pin as U423-1 instead of U423 pin 1. Although I can use text edit to delete U423-, but it is not an ideal solution.
The correct way to do this is to add a "<mydesign>.ref" file alongside your "<mydesign>.hyp" file. The ref file is a CSV file of the passive device values and model assignments for the ICs. In fact, inside HyperLynx BoardSim there is a handy ref file assignment tool in the "models" menu.