Decimals gone from Canadian Dollar breakdown

Our store accepts 3 currencies: USD, CAD, EUR. We had it set up so that if they chose USD or CAD, they would pay with USD in paypal (paypal charged an exchange fee for CAD) and EUR would be sent in EUR.

We wanted to change it so that CAD went through as CAD (so we would no longer get dinged the exchage fee for CAD sales). Our owner was told by another store owner that it's just a simple setting in the admin page to make the change. Unfortunately she attempted the change on little sleep and accidentally changed the wrong thing.

Now all CAD orders have ALL currency values in the breakdown section of the invoice rounded off to the nearest dollar (the sub-total, shipping, taxes and total are all still in the correct $##.## format and the totals have not changed (checked by comparing to an invoice that was printed before the change). It only appears to be affecting the display of the values (all the total and everything are untouched). Unfortunately it not only affects the admin preview of the order, but also the printed invoice.

Note: It affects orders paid in cash AND those paid with paypal, so I don't think it's a payment module issue and it ONLY affects orders done in CAD (USD and EUR orders are unaffected).

If anyone has any idea what may have happened, please let us know.

Check the settings in Admin - Localization - Currencies - Decimal Places for Canadian Dollar. Should be 2.

That was the first thing we checked, and yes it is set to 2.

The weird part is that on the invoice, the breakdown (list of items) has no decimals, but the table with sub-totals, taxes, shipping and total do have decimals.