In your Systems Manager network, only managed apps can be updated, re-installed, or removed via Dashboard. A managed app is one that was deployed via Systems Manager to your device. A non-managed app is any app that was installed on the device prior to installing the Meraki Systems Manager agent, or any app that was downloaded directly from the device without being deployed through Systems Manager.
To see whether an app is considered managed, consult the "Managed?" column in the Apps section of a device's client details page. Learn more about updating managed apps.
Systems Manager can attempt to manage an unmanaged app if configured in Systems manager > MDM > Apps with the following setting:
This feature is only available on iOS 9+. If the application is not already installed and this box is checked, the app will be installed and managed. If the application is installed unmanaged, the user will be prompted to allow management of the app on unsupervised devices and, if accepted, the application becomes managed.
If the Meraki management profile is removed from a device in which deployed apps have the Remove with MDM box unchecked, then those apps will not be considered managed when the device is re-enrolled to your Systems Manager network.