When you are working on a Working File and you save your work, this work is not automatically sent to the project file. This gives you the option of trying out some of your design before committing it for others to work on. if you want to send your work to the project file you need to use the command Save and Commit. This command will save your work And it will send your changes to the project file. If you do not save and commit, no one else will see your changes.