>Have you tried formatting the column in excel as character or numeric? If you have an alignment problem, seems to me that you are using general. This causes problems with imports.

This does't change anything. Before, I had:

98
99
95,98
1,2,3

And, this made all kinds of unpredictable results such as taken the first row as null. The only way to have all rows to be seen as is is to add a space in each of them such as:

 98
 99
 95, 98
 1, 2, 3