Scatter point labels don't update to reflect changes in charted series

Hello Experts!

I have a table that contains the data for a scatter chart, including a column with labels for the data points (see attached).

But when I delete rows from the middle of the table (causing lower rows to recalculate), the data point markers update correctly, but the associated labels often do not display.

I also have another a little question about a cell in the table that isn't behaving as expected.

Both questions are explained further in red text in the attached workbook.

Thanks experts! I couldn't do it without you!

JayUSA