During a refresh, keep old connection open until client is ready to reconnect

[defnull]

On a click on refresh, the VPN connection is dropped immediately. File transfers or other connections may run into timeout issues if the user takes too long to login. It would be nice if the refresh flow would keep the old VPN connection alive for as long as possible and only drop the old connection once the new session is ready to be connected, or the user cancels/aborts the refresh flow.