[connection]
id=<<id>>
uuid=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
type=vpn
permissions=user:<<permissions_user>>:;
autoconnect=false

[vpn]
password-flags=0
service-type=org.freedesktop.NetworkManager.pptp
require-mppe-128=yes
mppe-stateful=yes
user=<<user>>
refuse-eap=yes
refuse-chap=yes
gateway=<<gateway>>
refuse-pap=yes

[vpn-secrets]
password=<<password>>

[ipv4]
method=auto

cd /etc/NetworkManager/system-settings
cp "existing-working-vpn-config-file" "new-vpn-config-file"

sed -i "s/<<permissions_user>>/my_permissions_user/g" new-vpn-config-file
sed -i "s/<<user>>/my_user/g" new-vpn-config-file
sed -i "s/<<gateway>>/my_gateway/g" new-vpn-config-file
sed -i "s/<<password>>/my_password/g" new-vpn-config-file

service network-manager restart

nmcli connection import type openvpn file ~/myconfig.ovpn

nmcli connection show
nmcli connection modify myvpnconnectionname +vpn.data username=myusername