[DiapDealer]

Perhaps there's simply some confusion on expectations here? I might be missing something, but at first glance, I just don't see anything in the plugin's code that would preserve anything other than 1) variables included in the list of Sigil env vars, or 2) lines that start with '#' (commented lines), or 3) empty lines, or 4) lines with no = character in them.

EDIT: Actually, that's not true. I see now where the attempt to preserve custom entries is made. I'm just not sure why it's failing (at least on linux) to do so. Have to do more inspection.