Georgian Engineering Team (GET) participated on CMS experiment simulation experts meeting. GET represented methodologies and results of collaborative work with ATLAS experiment. Projects of compare analyses of ATLAS detector geometry descriptions implemented in simulation and reconstruction tasks were considered. Results of Coil and End-Cap toroid magnets study were presented. Report tools 45 min and triggered more than 1 hour discussion among CMS simulation experts. They finally agreed that caring out same work for CMS will considerably improve CMS simulation and reconstruction results. It was decided to add corresponding working package into the list of packages of preparing collaborative agreement between CMS and GET.