I have distributed a large number of sales forecast spreadsheets to our sales branches. The sheets overall structure are the same.

My problem is that I have discovered some formula errors that I need to correct. But most if not all of our sales guys have already come back with their forecasts. Some have keyed in their sales values in manually, while others in some cases, decided to leave it alone and let my original (and wrong) formula generate a value for them.

Is there a way to merge their spreadsheets, which contains the manually entered and formula driven numbers, and a re-worked spreadsheet with the correct formulas while retaining their manually entered numbers?

Is there a way in Excel to only lookup and replace formulas while leaving non-formula cells alone?

Thanks in advance!!