I'm finding it really hard to manage my invoices because time entries adopt the Billing type from the Task. I would like to manage which time entries on a task go to the invoice based on the Billing Type. I have tried that in multiple ways, but unfortunately, I couldn't find a better solution. It's really hard to separate time entries downstream to a different task and make it non-billable, as you cannot move time entries logged by different users. It would be great if Time Entries are also given the option to be marked as Billable or Non-Billable.