@Radhouene EL HADJ EL ARBI
This is by design. Atlas, and most governance tools in general, will trace lineage as far back as possible. With Atlas, not only will it go back to the root table(s), it can even go as far back as the Storm or Sqoop job that ingested the data to the original tables.
The purpose of having lineage this far back is for a user to be able to effectively trace back the origins of data, whether to validate data quality, for compliance, or even just to understand how the data has mutated/evolved to it's current state.