I'm unable to change the billable status selected on time entries weeks ago for jobs that later didn't materialize or were canceled.  I can't get rid of that "billable time" assigned to the customer.  I also can't change the customer if it is found later that the time entry should have gone to Project A v. Project B for a particular customer.   Employees also sometimes don't include enough detail in their notes, so once approved, I can't edit them for correlation on the invoice.  I've also noticed bugs in adding time to invoices - sometimes the time entries duplicate, etc.   Anyone else experienced the same or know how to roll back to a previous version that works?