[Answered ]-Migration of Django app with south leaves default value on column

Do not worry, the DEFAULT 1 in the DB only specifies that if you create a new instance in the table, this field will be populated with 1 by default, but this value can be changed. What keep_default does is disabling the value from being edited, e.g. a new field will get value 1 as default and you can’t change the value. This is not your case. You will get default value 1 on new instances but you will be able to edit the value.

Continuing point num 1 – no need to remove the value since DEFAULT 1 is the correct representation of a default value for a new instance of a field.