This is not in the least bit surprising. I download financial information from my accounts in the form of .csv files, but have never found any accounting software that will import those files reliably. I finally had to write my own csv parser and then tweak it for each wretched csv data provider to get things to work right.

For example, download credit card transactions as csv. Import into Quicken. Quicken decides that skookumchuck is the payee on all the transactions. Arggh. This is 2017 fer cryin out loud.