I was able to import the contacts to my account but not all columns appear. I created a new hubspot property category since the details is not on your list but after importing it, that column did not show up. I added Date met and that did not appear after import.
When you export the contact records, make sure you select "all records" otherwise, you just see the data that is in the current view.
You can then use that export as a template to add all the additional information you need and import that file as contact data.
Note: when you import previously exported information, make sure you select the dialogue box that says "Contains Contact Id" this will match up the information already in HubSpot and update any changes you made in the current records.
Let me know if that help, I can go into further detail if needed.
