Hi,
I am using blogpost with multiple categories selector and it will works perfectly.

I added a new field in Blogpost document type and I have set its
Attribute type: Text
Attribute size: 1000
Field type: multiple categories selector

When i inserted a new blogpost at that time i checked it in database table "CONTENT_BlogPost" there is a new column added i.e. "Categories" and it contains categories id's i.e. 1,2,3,4

Now if i am updated this same blog post again and now updated categories by using multiple categories selector and now i deselect 1,2,3 and select new categories i.e. 5,6 at that time it will updated with a new data i.e.4,5,6 but it shows 1,2,3,4,5,6

its wrong i want to improve this how??