Main and Child datasets - lost data in the transfer

Hi!
I am using a main dataset from Athena and a child dataset derived from it.
I am loosing information between the Main and Child datasets and i cannot figure out why.
(no filters in the data set).
Also, there is information that i see in the analysis but cannot find when a filter directly in the dataset.

Any ideas or suggestions?

Thanks.

Hi Gal, Can you provide more details on the information you are loosing? Try creating a new child and see if you have the same behavior.