upgrade files

I am trying to update some old tracks that I believe I recorded using Halion 3 - fxb files. Does anyone know if I can import these into Halion 6. I read a forum post that said I need a license from Halion 5 but when I reached out to Steinberg support they said Hal 3 files will work with Hal 6. they did not mention how to do it?

thanks,

G