The particle source term data and current particle positions from the initial values file are used, if you follow the instructions below: GUI: ANSYS CFX Solver Manager ->Define Run>Initial Values Tab: Activate: Continue History from Continue History from: Initial Values File Use Mesh from: Solver Input File Command Line: Use one of the following options on the command line: -continue-from-file -cont-from-file Use initial values and continue the run history from the specified ANSYS CFX Results File. The mesh from the Solver Input File is used unless the -use-mesh-from-iv option is also specified. Key Words: Lagrangian Particle Tracking, Lagrange Particle Tracking, transient, restart, modified mesh, changed mesh