If you run TSCUBE afterwards, these cells will not be updated by any value, which means if the cell is initial when you extract data (infocube will not have entry for this cell), and afterwards the cell is filled by some value, then you execute TSCUBE, the "some value" will not be overwritten.
If you want to make a full restore, you'll need to clean up all values before you run TSCUBE.
BR,
Ada