Most likely, inserting rows will not impact the array formula's ability to
function.
Without your formula, though, it's difficult to say. However, is it
possible that your formula returns #NA! if there are blank cells in the
referenced range(s)?

Test by clearing the cells in one of the referenced rows (not deleting it).
Then Edit|Undo to put the values back.

Does that help?

***********
Regards,
Ron

XL2002, WinXP-Pro


"Chris" wrote:

I have a worksheet containing 2 array formulas. If I insert rows within the
cell reference range the formulas appear to automatically update to reflect
the new rows BUT the formula no longer returns a result just #NA.
Is there a way to prevent this and allow row insertions?