The reason you can't update "condition update" is because that's actually a combination of fields. You want to display the field just "condition", then you'll be able to in-line edit that field.
I don't know why you can't in-line edit Condition Type, but, you can bulk edit that field. Just select all those you want to edit, and click the Edit button at the top and change the condition type from there and it will change all of them at once.