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Backup your whole GDS folder (usually located at C:/GDSLab) before migration.
Make sure you install GDSLab without any cables/equipment connected to the computer.
Copy .ini and calibration files from the old installation to the new one.
3a. ini files are found in at C:\GDSLab.
3b. Calibration files are found in at C:\GDSLab\Calibration Files.
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