I recently migrated / upgraded from Quickbooks Self-Employed to Quickbooks Online and all my transactions, invoices and history disappeared.After 'upgrading' I recieved an email stating that there had been an 'error' which would take 72 hours to resolve. A week later this still hadn't happened and I was unable to generate invoices, track income or expenses. I opened a case with their customer service and here I am 3 weeks later. Each customer service advsior cannot offer anymore than 'this has been esclated to the engineering team'. One even suggested I open a new account which I then merge when this issue is fixed which safe to say, is not the solution I want. I just want my data back and to be able to generate invoices / get paid. All around a terrible experience, I'm a sole-trader and have been with QB for 3 years.