Its a right pain that there is no easy way to migrate these between environments.
You need to get those TRUE / FALSE changed over to 1 and 0's. And then make sure that your top row of the spreadsheet has a value in these fields so the import can evaluate and see its not a string.
If its still ignoring the columns, you can try creating a table with a name and make sure all your data is included in the table definition, and try to import from that.