Automate importing of FileZilla bookmarks into WinSCP

I need to remotely deploy WinSCP to a bunch of computers and import FileZilla bookmarks/sites into it. Is there a way (install parameter, launch parameter, bat script, file copy, anything) to import filezilla sites into WinSCP without having to go to the GUI?

No. All you can do is to initiate the import with undocumented /ImportSitesIfAny switch.