Charlton ava Donnie Surely wrong

Doncaster winning 3-1 when game abandoned, so game void, but the Doncaster player sent off, will still get a one game ban!

Does seem wrong. Do the players who scored get the goals taken off them? I think they do, so shouldn't all cards be rescinded too?

How many minutes had been played? As I dont get why they both just agree to give Donny the win