Final answer:
The sister company should import the Excel report into Quickbooks Online by following the steps provided by Quickbooks Online.
Step-by-step explanation:
In order for the sister company to import the data from the Excel report into Quickbooks Online, they would need to follow the necessary steps provided by Quickbooks Online. Usually, Quickbooks Online allows users to upload files in .CSV or .XLS format, so the Excel report would need to be saved as one of these file types. After that, the sister company can navigate to the import feature in Quickbooks Online and follow the prompts to import the data from the Excel report.