Batch Save tool in the System Families toolset helps save all system families of some project files in batch out to some new project (template) files.
After the ribbon button is clicked, it pops up a dialog to ask for files.
If the OK button is clicked, the files will be opened one by one and their system families will be parsed and saved out accordingly. A progress bar will show how many files in total, which file is currently being processed, and what remaining time may be. Since it takes some time for each file to be parsed, another progress bar will also be shown. An information box will finally show what have happened.
The new files may look as follows in the Windows Explorer. The version number 2018 can be specified in the Settings command. The SF.rvt indicates it is a system family project file.