How to keep a previous AR experience

Hello,

I have the problem with keeping a previous AR experience. Below is the actual use case.

 1. Track AR experience in Vuforia App

 2. Run other App not related to Vuforia Engine

 3. Return back to Vuforia App and lose a previous AR experience

We want to keep a previous AR experience when returning back to Vuforia App.

It returns back to Vuforia App when we use ARCore, but it does not on Vuforia Engine.

Regards,