When change the Internet source , APM VPN still connected

Dears,

I have 4 APM devices, two in Main site and two in DR site.

When user is connecting on any site and change the internet source Ex: he used wired and change to wirless or hotspot from the mobile, the APM VPN connection still connected.

There is a feature to force user to connect again if internet down or the user change the internet source.

thanks