Negative numbers in export to excel

Hi,

We have two servers, one (X) without SP1 and the other (Y) with SP1.

When I make export to excel in X, the negative numbers sometimes saved as @ or the actual negative number (e.g. -42), in both cases it is saved as text.

The positive numbers are saved as numbers.

We saw that SAP fixed it in SP1, we tried it on Y, we got that the negative numbers always show (e.g. -42), but all the numbers, positive and negative are saved as text.

We need to see all the actual numbers(without @), and to be saved as numbers (so we can make calculations on them).

Does anyone have any idea?

Thanks.