A convenient way to track currency unrealized gains ?

[coolnodje]

I've try to find a way on how I could track my potential gain/loss in
forex in Gnucash.

Help has been helpful for the concepts, particularly Chapter 9, but it's
not satisfying for what I would like to achieve.

I've been able to create my own accounts under Trading, which gives me a
concrete figure for a given rate, but that setup is too complex and
involves a lot of splits which I find error prone.
The good thing is that it offers me a "control board" which does not
affect the Asset - Income equation.

What I would like ideally is a sort of control table that tells me how
much I've gain/lost for each forex transaction.

Here's a concrete case to make things clear.
Let's say I have a EUR and a USD account at the bank.

Asset:Bank:EUR €10000    Total €10000
Asset:Bank:USD $0            Total €0

On 01/01/2008 I transfer €1000 at a rate of say EUR/USD 1.30

Asset:Bank:EUR €9000    Total €9000
Asset:Bank:USD $1300    Total €1000

On 01/01/2009 I transfer €1000 at a rate of say EUR/USD 1.20

Asset:Bank:EUR €8000    Total €8000
Asset:Bank:USD $2500    Total €2083.33

The Gnucash Account global currency, in EUR here, will offer me a global
valuation in EUR according to the daily exchange rate, which is good.
So I would know my today valuation, if EUR/USD is 1.20, is €10083.33.

But I can only calculate that I have an unrealized gain of €83.33
because I remember the original equity was €10000.
Over time, especially with many currencies, one loses track of what
operation is a gain or a loss.

I'd like to be able to SEE that €83.33 gain in an account somewhere, and
also get it automatically ajusted to daily rate.

The way I found for now is to duplicate every transaction (say EUR-USD)
into manually defined accounts under Trading (which, if I understand
correctly, don't affect the basic equation).
But that's 3 accounts:

Trading:EUR Sell                            €2000
Trading:Unrealized EUR Buy        -€2083.33         
Trading:Unrealized Gain                €83.33

That's much too heavy a process and quite error prone to manipulate all
the splits.

Hope I've made myself clear.
How do others track their stocks/currency unrealized gains?

Best regards