Hey Jessica,
Thank you for your patience while I did some testing with the provided .CSV file. I was able to successfully import the entire file you sent over, so I’m really not sure where the breakdown is. (see screenshot below)

I have the default Twenty Sixteen theme and only our plugins active during my testing, so you may want to try reviewing our Testing for conflicts guide to see if you can narrow down the exact source of conflict. If you’re still having troubles, we’ve got a list of customizers that can help out.
Sorry I can’t be of more assistance here and thanks again for your patience. Have a great upcoming weekend!