In Windows 7
1. Win+R => %AppData%\Microsoft\Sticky Notes
2. copy StickyNotes.snt to Windows 10 device
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In Windows 10
NOTE:
You need to reset the StickyNotes in <Win Setting -> App -> StickyNotes -> Advanced setting -> Reset>
1. Win+R => %LocalAppData%\Packages\Microsoft.MicrosoftStickyNotes_8wekyb3d8bbwe\LocalState
2. Create a folder => Legacy
3. Put the " StickyNotes.snt" into the " Legacy " folder
4. rename the "StickyNotes.snt" to "ThresholdNotes.snt"