One of my users recently came to me with an interesting problem this week. She had left her old job but had left all her contacts on her work account. Once the account was deleted, all the addresses were wiped out as well. By sheer luck, her iPad had a copy of the contacts since she never connected it to a new network which prevented any type of sync. We managed to export the contacts off the iPad to VCF cards but were now left with the tedious task of importing them all into iCloud for her to use on her phone. I tried dragging and dropping all the VCF cards into the browser but iCloud displayed 300+ errors saying the card could not be imported, without specifying which ones were a problem. The import would error out after clicking OK at around 300 times and not actually import a single one. I remembered that the format of the cards is simple text and you can easily merge the files into one big file to import.