Change showing as refunds

Hi

Our daily reports began showing our cash figure as artificially high only corrected by removing the ‘refunds’ amount which recently started showing up on the report. (we don’t use a refund system day to day)

I just recently implemented a multiple currencies setup, where we price in the local currency but we accept the equivalent in three additional cash currencies ($, £, EUR). We then give change in local currency.

The Maths for this is in the system with the user entering the currency and amount given, whilst the system works out the change in local currency.

It seems like the change given to each customer is being recorded somewhere as a refund but I can seem tolocate the setting which is doing this.

Any ideas where to look?