Hi…i will suggest to try the migration. Once the simulation is setup the simulation is run with the LTSPICE engine which is also new with PSIM version 11.1. You are able to automatically export a simulation to a *.cir file which is then run by LTSPICE. Once the LTSPICE engine is finished the results are loaded into PSIM’s SimView for analysis. You will be able to merge the results from LTSPICE into other simulation results.