Comment 30 for bug 1823087

@Wayne-

Do we require this level of backwards compatibility? As in, do we require that v6 not only read the segment fill polygon but also output segments? If so, I worry that we paint ourselves into a corner.

I have a preference for warning the user that the board uses segment fills when opening. Then forcing a zone clear when opening the board in v6. The user-initiated refill action will then fill the zone with a polygon fill.

This would allow us to get rid of ZFM_SEGMENTS handling. Anything else requires most of the same code, including output handling and will generate bug reports when it doesn't work as expected.