after looking in the model for navdata in laravel the fields have changed in v7, they are now the following.
protected $fillable = [
'id',
'name',
'type',
'lat',
'lon',
'freq',
];
there is more fields in your navdata dump @Strider than whats in the database table, im running v7 of phpvms, do we just drop the current navdata table and import your version ?