I want to use Cntrl + End to find that last cell containing data in my
spreadsheet. I recorded this action and the following VBA command was the
result.

ActiveCell.SpecialCells(xlLastCell).Select

It jumps to an empty cell. After some experimentation, I discovered that
Excel is jumping to the furthest cell to the bottom right that had ever
contained data, regardless of whether it actually contains data at the
moment. I concluded this by picking a cell a few rows down and columns
right of the cell Excel selected with Cntrl+End, entering some text, then
deleting it. Then when I issued the command again it took me to that new
cell. Deleting rows and columns had no effect.

How can I make Excel forget that I had used a particular cell so that Cntrl
+ End (xlLastCell) takes me to the last cell that presently contains data?