I remember frontpage spelled disaster with classic.
But I think the newer version is a little more script friendly.
You could still use frontpage to preview your changes. I think you would be safe also in saving in frontpage if you can figure out how to view the actual script text. But I would never never publish threads with frontpage. That is where all the magic happens that Frontpage will change file permissions and add junk to the script.
And I speak from experience. Because I used frontpage back in 1999-2000 and broke the board many a time till I figured out it was frontpage that was the culprit.
I don't use frontpage anymore