I've got source data in sheet: x,
in cols A to I, data from row2 down

In another sheet: y (received daily, for new data)
Data is in cols A to I (identical to x's structure), from row2 down
Col A in y can be used to determine the last data row

I'd like to run a sub to update x with the new data in y. The new data is to
simply append to x's cols A to I, below existing data, determined by last
data row in x's col A