Close and reopen Android app within one testcase while keeping modified preferences


I wonder if it is possible to keep (app) preferences made during a testcase after closing and reopening the app again.

To start the app i’am using Mobile._startApplication, to close it Mobile.close_Application and finally to reopen the app while still in the same testcase using Mobile._startApplication.
But this causes the app to be reinstalled with default settings which makes it impossible to verify certain changes made earlier in the testcase …

Is there a way to keep the previously made settings after restarting the app?