Hierarchy not Updated after Data Load

Hello All,

I'm using extractor 0MATERIAL_CDTH_CMHIER to load a hierachy into 0MATERIAL (BW 7.0).

The problem is that when there are changes in nodes of the hierarchy, it´s not being updated by this data load (eventhough the new records are loaded into PSA). I need to delete and recreate the hiearchy to be able to see the new nodes.

Any idea on what could be the cause of this issue?

Thanks in advance,

Cristina.