Converted data from XERO to Quickbooks and some accounts have to be changed to USD from CAD, how do I change it

Consider to purchase a 3rd party conversion service. You should contact @Fiat Lux - ASIA for assistance.

Hi there. Glad to have you join the QuickBooks family I'll be glad to share more info about converting from Xero To QuickBooks. It's important to note that transactions of different currencies in Xero will be converted into the home currency configured in QuickBooks Online. If you have transactions in USD in Xero and your home currency in QuickBooks is CAD, all transactions will be converted to CAD using the exchange rates in Xero. There will be no unrealized foreign currency gains or losses for your customers and vendors. The rounding differences from conversions will show up and be reflected as a P&L item in QuickBooks Online. To learn more about converting your data successfully, check out this article here. 

Feel free to ask other questions. I'll be a message away.