Arter definitely got worse.
Bostock definitely got better.

I believe Arter's last game for Notts during a 1-0 win over Dover where he was substituted off. Previously he came on away at Aldershot and like most of the team that day had a shocker in a 3-1 loss#YAPs

I know Bostock's last game for Notts was the National League Playoff final at Wembley stadium in front of over 38,000 spectators where he ran the show, was the standout player on display, and without him we don't reach extra time, let alone win on penalties. It really was that simple.