I have not yet been able to replicate this on any site, even the few that have reported using their own CSV on their own site, so I am uncertain what the solution would be at this time. Like the couple others who have reported, I will be more than happy to take a look. What I’ll need is the CSV file your were trying to import and and temp WordPress admin so I can do test imports. The login details can be posted here as a private reply.
If you have already input the entries manually I would imported into a test category with unlisted entries so it would not affect your like directory.