Hi Thomas,
You need to load hierarchy node when you load master data & text. On the selection screen tab "Hierarchy", select the hierarchy you want to load, and make sure you put in the correct member ID and level. You can check the hierarchy node ID from RSH1 tcode on BW
Check out this discussion : BPC 7.5: Hierarchy load fra BW. Missing "parent" nodes.
Hope it helps.
Regards
Hendry