While Financial Edge NXT improved the look of Excel exports dramatically over the database version, it still does not include formulas in Excel exports. This is a common feature in every other type of financial system - including inexpensive ones such as QuickBooks. All FENXT does is export everything as a value. So then if you want to manipulate the data in Excel, you have to first add in all of the formulas yourself. Some systems, like MS Dynamics/Great Plains, give you an option of including or not including formulas when exporting to Excel.
Apparently this same idea was proposed in 2017, but only 4 people liked it. But I am trying it again because I have to imagine that a number of users would like to see this feature added to FENXT. If a $200 system like QuickBooks can do it, then a tens of thousands per year system like FENXT should be able to as well.