Cash flow module - store both base and project currency cost data

Our business's headquarters, located in the US, fund all projects via a USD bank account. As such our base currency is USD. Our projects are domestic and international, so we default international projects to a foreign currency (project currency) with the built-in functionality to alternate reports and cost sheets between both base and project currency. The issue is that the cash flow module only stores the project currency values, so the US office cannot use the org-level cash flow report to fund from because it contains multiple currencies (project currency) instead of a single base currency.