Hi Melissa,
One example of how to use the Batch Process is Batch Update of Cached Visible Edges (CVE) in AECOsim Building Designer
To replace cells the process will be similar, but with the appropriate replace cell key-ins added in the command file. tTe commands that you will need to use will depend on the applicatuion and whether the cells are normal cells, shared cells or in the case of AECOsim Building Designer, Compound Cells where the method chosen will depend on whether DataGroup instances are involved.