Thank you @Retired_mod for the answer, but this behaviour it is not what CDF is meant to be. 

I will explain myself:

1. With this behaviour I cannot identify which row is really updated.

2. I cannot find out the count of the real updates.

3. Storing all this data and not only the Updates/Inserts/Delete will end in a huge tabel..in few months.

4. Merging the changes to the base table, it will imply much more time, than merging the real changes.

How we can cover all of these inconveniences?