[GNC] Should GNUCash allow a split to reference the same account twice

[Henry Law]

Earlier today my wife was running GNUCash to update "her" bit of the
accounts and got into a serious tangle because she (inadvertently)
changed a newly-imported transaction so that its two splits -- which
should have been our current account and her credit card account --
both referred to the credit card account.  She then reconciled one half
and not the other, which caused a cascade of issues which took me
several hours and a manual edit to the GNUCash file to fix.

Should GNUCash refuse to allow a transaction to have two splits into
the same account?  My knowledge of accounting is scant, but with it I
can't see why one would ever legitimately do that.

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Henry Law                    n e w s @ l a w s h o u s e . o r g
Manchester, England