We have a list of unpaid invoices that are retrieved a few times a week. The raw data is pasted on one sheet (invoice data) and data from a select few columns are copied to another sheet with a very simple ='invoice data'A1 formula etc. That data is then manipulated but there is no absolute link to the specific invoice data, the formula is just to the row the invoice data is currently in. Problem is when new raw data is pasted the row position of the invoices will change as old ones go and new are added but the adjustments relative to a specific invoice (expected days payment is delayed, likely paid value etc) will now align with a different invoice number. Any ideas how can I overcome this automatically but still be able to retain simply typing 45 (as in the days payment delayed) in a specific column?