I have already uploaded my database to the FileMaker server but I need to change the layouts because everything has been altered when viewing through a web browser. I will likely need to alter the layouts regularly as people using the database think of new information to add. Do I need to change it using my FileMaker pro software and then upload it again? and if so, does this automatically overwrite the original/previous upload, or do I need to keep uploading the database and deleting the old one? How will this affect the data that has been entered by users?