TImportOptions.ClearCells Property
If true, the cells in the grid will be cleared before importing. If false, the cells in Excel will just overwrite exiting ones, but empty cells in Excel will keep the old values in the grid.
Syntax
Unit: VCL.TMSFNCGridExcelImport / FMX.TMSFNCGridExcelImport
property TImportOptions.ClearCells: Boolean