You can view the Filemaker Go Development Guide at http://www.filemaker.com/support/product/docs/filemaker-go/fmgo_development.pdf
Text formatting being removed is the designed behavior, filemaker converts to plain text. I would guess this has to do with all fonts not being supported on iOS or desktop. http://help.filemaker.com/app/answers/detail/a_id/7748
You can use file services such as dropbox or sugarsync to copy files from your computer to your device. These service currently don't allow you to copy a database from the device to the computer and the other option besides iTunes is to email the database to your device.
I would guess the text formatting that you are trying to use is the reason the script is not working. As stated in the Go Development Guide, all fonts are not supported on iOS or desktop.