[kmymoney] [Bug 385900] Report generates different sum values compared to the stable version

[Jack]

https://bugs.kde.org/show_bug.cgi?id=385900

Jack <ostroffjh at users.sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDSINFO                   |REPORTED
         Resolution|WAITINGFORINFO              |---

--- Comment #7 from Jack <ostroffjh at users.sourceforge.net> ---
I've dug through this and the related bugs.  Current 5.1 and master  both show
the sum of 344.528,63 AED which seems to be incorrect, with the underlying
cause that the pivot table in the report sums all the values in a cell (month)
before converting the currency.  In my view, whether that conversion is then
done with an earlier or later conversion rate is still going to get a value
different than if each contributing value is converted separately (assuming
rates are available on each transaction date, as is the case here.
I'm restoring to REPORTED, although I'm not sure I agree that 344457,36 AED is
correct either.
Whatever the decision, I think it needs to be made more obvious to the user how
and when currency conversions are done in various reports.  This certainly
needs to be in the handbook, but also as some sort of note in the Reports View
itself.
I still have an underlying question of whether currency conversions should
always be done per transaction in reports with longer granularity (month, year,
...) or if it is ok to do the conversion per time period, and if so, with which
conversion rate?

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