1) If an application is in use when an upgrade is attempted, will the Add-AppXPackage complete or fail? If so is there any thought of adding the command to a pending queue to be processed at a later time (such as is done in App-V)?
2) When upgrading an MSIX package, what is the difference between the switches:
In particular, are there situations where one might fail and the other succeed? I'm guessing that if you specify only the target application it is possible the Add might not be able to complete successfully in some cases.