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OK, I think I understand the scenario now. There are multiple exchanges for this coin and only one of them is showing incorrect exchange rate?

In the recent development releases of Awesome Miner, there is a feature to do Exchange Filtering. In the Coin Properties dialog you can also select exchanges to use for the specific coin. If one exchange is reporting bad values for a coin, you can select to use all exchanges except that one.
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That is exactly the case, and I have filtered that exchange (also it was not 'active' because I had also filtered on low volume) but I wondered if it was being dealt with correctly (i.e. not using the 'default' exchange from ctm api). Thank you for taking a look!