Weirdness when converting between two fixated cost currencies in same transaction

[Bradley M. Kuhn]

I restate below my "Finally" question from my email earlier today below.
It's a question regarding converting between fixated cost currencies.

Why does this work fine and DTRT:
############################################################
default $

2012/08/03 Currency Conversion
   Assets:GBP Acct    £-3,855.00  {=$1.5893}
   Assets:GBP Acct    $6,126.75

2012/08/03 Currency Conversion
   Assets:GBP Acct    $-6,126.75
   Expenses:Foreign Exchange Loss  $131.38
   Assets:GBP Acct    £3,855.00  {=$1.5552200}

2012/08/03 Venue Payment
   Assets:GBP Acct    £-3,855.00  {=$1.5552200}
   Assets:Checking    £-6,145.00  {=$1.5552200}
   Expenses:Venue     £10,000.00  {=$1.5552200}
############################################################

But this single transaction that I posted elsewhere in this thread:

>############################################################
> default $
>
> 2012/08/03 Venue Payment
>    Assets:GBP Acct    £-3,855.00  {=$1.5893}
>    Assets:Checking    £-6,145.00  {=$1.5552200}
>    Expenses:Venue     £10,000.00  {=$1.5552200}
>    Expenses:Currency Loss     $131.38
>############################################################

> give.. this error:

> > 2012/08/03 Venue Payment
> >    Expenses:Foreign Exchange Loss         $131.38
> >    Assets:GBP Acct    £-3,855.00  {=$1.5893}
> >    Assets:Checking    £-6,145.00  {=$1.5552200}
> >    Expenses:Venue     £10,000.00  {=$1.5552200}
> Unbalanced remainder is:
>              $131.38
> £3,855.00 {=$1.55522}
> £-3,855.00 {=$1.5893}
> Amount to balance against:
>              $131.38
> £10,000.00 {=$1.55522}
> Error: Transaction does not balance

These two things should be equivalent, right?

Is this a bug, or am I misunderstanding something?
--
   -- bkuhn