Run as admin loses access to mapped drives

I have a batch file that must be run as administrator.
The batch file simply starts an application (MyApp.exe).

the problem is that because the batch file is run as admin, MyApp.exe can't access networks drives.
Since mapped drives are specific to users context, I activated admin account, logged in and mapped a drive.

but still MyApp.exe can't access the mapped network drive when it's run from the batch file.
Is there any possible way to access a network drive when an application is run as admin?

OS: windows 8 Pro x64

Any kind of solution is much appreciated.