System Workbench for STM32

Thanks for your answer

I made a test
MX generated a new directory under SW4STM32 named "freeRTOS_3 Configuration"
But in my previous "freeRTOS_3" folder .cproject and .project have been changed in .cproject.bak and .project.bak. So I couldn't use them. And I had to use your "step by step.doc" file to restart the project

I think I missed something
Thanks for your help

Jean