Appreciate the time everyone is giving to this, but think it's "back to the drawing board", because this short cut isn't working.
I used one cell as an example in the attachment, but the "real" job has a large stock sheet (100k+ rows and 20 cols), updated regularly against sheet supplied by wholesaler.
I highlight cells that have changed by "filling" using Conditional Formatting. Which, of course, disappears when I copy the updated cell across, because both sheets now match.
I was hoping that a "worksheet change" approach would "fill" the relevant cells automatically on the Stock sheet, so they would remain "filled" when I copy the update across.
As both sheets are the same dimension, I think I'll have to slog through both sheets, and fill and copy cells that don't match.
I tried the following, but
Annoying that it should be straightforward.
Ochimus
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