Uninstall Store Commerce app using Power shell

 1. Search for the full package name of the current MPOS using command 

Get-AppxPackage -AllUsers

or 

Get-AppxPackage *pos* --AllUser

then find the package of the Microsoft.Retails

2. Uninstall the package using below command

Remove-AppxPackage -AllUsers <Package name in step 1>

3. Go to Control Panel to find the Commerce app and uninstall it.

Creat DB snapshot in order to reuse the test data

 --Taking the snapshot

CREATE DATABASE AxDB_Snapshot ON  

( NAME = <DB Logical name>, FILENAME =  

'<the path to save the snapshot file>' )  

AS SNAPSHOT OF AxDB;

It took me around 2 mins to create the snapshot

--Restoring the database from the snapshot

ALTER DATABASE AxDB SET SINGLE_USER WITH ROLLBACK IMMEDIATE;

RESTORE DATABASE AxDB from  

DATABASE_SNAPSHOT = 'AxDB_Snapshot';  

ALTER DATABASE AxDB SET MULTI_USER;