[GNC] Redo account reconciliations

[Fred Bone]

On 04 September 2021 at 13:10, Christopher Lam said:

> Derek,
> Consider a well-used bank account. You reconcile every end of the month
> successfully up to 31 Aug 2021. Accidentally you unreconcile a Feb 2021
> split. You retrieve your 28 Feb 2021 bank statement, try to re-reconcile
> and fail because the reconciliation end balance also tallies splits from
> March 2021 onwards. C

Well, yes. You should be re-reconciling to the August statement date & 
balance.