Historical Trending Reports Use Static Exchange Rates, Not Advanced Currency Management Dated Exchange Rates

Note: This article expands on our "Limitations of Historical Trending" documentation, which explains:

"Salesforce Historical Trending Reports do not use Dated Exchange Rates from Advanced Currency Management (ACM). Instead, they use the static exchange rate defined on the org's main currency page. This article explains how Historical Trending and Advanced Currency Management interact, and how to ensure the correct exchange rates are reflected in reports." (This applies only to orgs that haven't enabled Advanced Currency Management)

Here's how "Dated Exchange Rates" and "Historical Trending Reports" work in conjunction with one another.