In the end, functionality for expenses being invoiced to a customer requires QBO Plus which my rep said was unnecessary. This means that the subscription ends up being more expensive that originally thought to have the function I was told was included. 

Time entries with a non-local currency as the billing currency still don't work and as such need to be manually added to invoices without the details. Frustrating but hopefully as there are others with the same issue it will be moved up the list of priorities.