Descombinar celdas y llenar los campos vacíos con el valor de arriba - Unmerge and fill empty cells with the value above in LibreOffice Calc

1 Merged

 

2 Unmerged

3 Use auxiliar cell expresions

 3 Copy vertical formula

4 Copy horizontal formula

 5 Copy origin cells

 6 Paste special with ctrl+shif+v in auxiliar cells

7 Select skip empty cells

8 Yes

 9 Cells are pasted

- https://ask.libreoffice.org/en/question/257164/solved-fill-blank-cells-with-value-from-above/