Policy
Extend data range formats and formulas
This policy setting sets the "Extend data range formats and formulas" option found under File tab | Options | Advanced | Editing Options. If you enable or do not configure this policy setting, Excel will allow the user to automatically format new items added to the end of a list to match the format of the rest of the list. This is the default behavior. If you disable this policy setting, Excel will not automatically format new items added to the end of a list.
5e0d642b8760 L_ExtendDataRangeFormatsAndFormulas Registry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\excel\options\extendlist (enabled) = 1
HKCU\software\policies\microsoft\office\16.0\excel\options\extendlist (disabled) = 0 Policy notes
This policy setting sets the "Extend data range formats and formulas" option found under File tab | Options | Advanced | Editing Options. If you enable or do not configure this policy setting, Excel will allow the user to automatically format new items added to the end of a list to match the format of the rest of the list. This is the default behavior. If you disable this policy setting, Excel will not automatically format new items added to the end of a list.