This option was designed to generate the graphical physical model using the logical model layout. PSQL enables to merge origimal XMI file containing diagramming information with physical model stored in PSQL files containing all information about physical model.
Choose menu option File->Merge XMI & PSQL. System prompts you to enter the original XMI file and then the enter the output file where the merge is saved.
Merged file can be imported into used CASE tool.