AX2012R2 Supplier Transactions appearing on Customer FC Revaluation report

Since an upgrade to R2 I have some supplier transactions appearing on the Customer - foreign currency revaluation report. They have also appeared on the supplier report and don’t seem to have posted twice.

Has anyone else seen this happening, or can anyone suggest why this would have happened?

For info, Microsoft have identified this as a bug and have issued a hotfix for it