Khaled: The solution I would recommend is attaching a the Group name to a Server-Instance instead of memorizing the IP/host last connected to, unless there is no Group name present, then fall back to the 001 Network name, otherwise the IP/host:Port:Password combo.
Honestly, the whole server list needs some revamping.
Primary reason why mIRC should not reconnect to the last IP it was connected to, is because there's an explicit feature in the server list to "move server to top". By reconnecting to the last server, you are implicitly ignoring this feature.
