CSV export calc problem..

[nycreate]

Issue...
Exporting CSV returns calc element data as '0'

If I include the elements with the calc is run from then data is correct (with include calculations on or off)

If I include just the required elements (with include calculations on or off)
the result is '0'

I would like to be able just to export required data.

Is this an issue or am I doing something wrong or missing something?

Thanks in advance.