Hola!
After a migration and trying to upload the site logo I get the following error:
EntityStorageException: SQLSTATE [42S22]: Column not found: 1054 Unknown column 'type' in 'field list' in EntityDatabaseStorageController-> save () (line 555 of ..... / core / modules / entity / entity.controller.inc).
Any ideas?
Thanks for the follow-up on how you are managing things. An addition to your comment above for future readers: the Feeds Tamper module would allow you to import multiple terms (at the moment it is not yet fully ported but I expect it will be at some point).