AbleCommerce Shopping Cart Software

I have an issue in email templates.

In the Customer Order Notification template, the "order total" is $order.Items.TotalPriceById().ToString("ulc"). And it's showing correctly with user's local currency.
In the Order Shipped template, there is an exactly same "order total" field and with the same $order.Items.TotalPriceById().ToString("ulc"). But this time it always showing price in CAD currency in the email.

Really have no idea how this happens. Anyone has suggestion?

Did you checked this on same order. I mean to say that customer for both Emails was same or not?

Yes. I checked the Order Confirmation email and the shipping notification email for the same order. And the customer is the same. That's why it's weird.