Thank you for your post.
Think of FileMaker Go as FileMaker Pro on another machine. That is, if you want to update a file from another machine, you would need to write a script that would compare the two files and make changes, probably based on a Modification Date. The same would hold true for the FileMaker Go file, since it is a FileMaker Pro database file. When you move it over to your Windows machine, you would need a script to compare the data and make the appropriate changes.