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CoreMigration-RemoveDuplicateComputer/readme.md

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+# removeduplicate.ps1 — Remove Duplicate Devices
+
+Delete duplicate computer objects left on an **old Core** after migrating to a **new Core**.  
+The script connects to both Cores via the legacy SOAP endpoint (`MBSDKService/MsgSDK.asmx`), compares by `DeviceName`, and deletes the matching device from the old Core (skips names starting with `newcore`, and ignores `GUID = "Unassigned"`).
+
+## Requirements
+- An account with rights to list devices and delete computers.
+- Windows PowerShell 5.1.
+
+## Configure
+Edit the two endpoints in the script:
+```powershell
+$ldWSold = New-WebServiceProxy -Uri http://oldcore.example.com/MBSDKService/MsgSDK.asmx  -Credential $mycreds
+$ldWSNew = New-WebServiceProxy -Uri https://newcore.example.com/MBSDKService/MsgSDK.asmx -Credential $mycreds
+```
+
+## Run
+Edit the two endpoints in the script:
+```powershell
+powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\removeduplicate.ps1
+```