I am going through a similar problem with migration from desktop to online. I am in construction and I keep track of all my jobs with items and progressive invoicing. The migration has literally put my business at a halt. Non of the previous invoices are linked to my estimates or jobs. This goes for every job I have aver done. You do a report on the jobs and they are all zeroed out as if they never happened. I have been on the phone with Tech help for 4 days and about 16 hours with 8 different people. No one can seem to fix it or know why it is the case. Some have said that progressive invoicing doesn't link to estimates when migrating up to online. I have several open jobs that have been billed out and paid different amounts with progressive invoicing. I'm being told that I need to go in an manually change the invoice to reflect what has been paid so far. Even if I did that it would take me several days to that. It still would not change the fact that all my jobs are zeroed out and I have no record and job costs for each job now. QBO advertises seamless upgrade, It has been nothing but seamless. I haven't been able to use my Quickbooks for over a week now and I can not invoice customers to get paid. Now they are not returning my phone calls. They are ruining my business with this very flawed migration.