EVGET in BPC 7 MS and SQL 2008

Have there been any change in how evget works in BPC 7 MS with SQL 2008 compared with BPC 5,1 and SQL 2005?

When I use EVGET in BPC 5.1 and SQL 2005 I always get RFN# when the cell with EVGET isn't updated.

But now when I'm trying BPC 7 and SQL 2008 I get i zero (0) when cell isn't updated. And some times I get another value that isn't the right value for that specific EVGET formula, seems like the system has an old value in memory thats shows, but when I update the, right value shows up in the cell.

This can be a bit confusing and even worse, in some of our reports the wrong value isn't updated when report is refreshed.

Anyone with the same problem or anyone who know if there are any changes made how the data is refreshed in EVGET formulas