@Inspectah, It should be possible to detect change in external IP using the following workaround.
- Settings > Reconnect
- Auto Reconnect Enabled > Disable
- Reconnect Method > External Batch Reconnect (Leave rest of the fields blank)
- Manually change the external IP (Switch the server on your VPN)
- After the external IP has changed, click the "Reconnect" button on the Main Toolbar