Issue with Product Build Up

Hopefully this is the correct community for this.


I am having an issue after moving from Process Planning within my PPR to the Assembly Evaluation to position the part correctly. When I set the operation position and part position I can click through the process in the tree and the build up and part locations are correct. However when I go to play the process using the play button in the centre of the arrow my Data defaults back to the EBOM zero and not the positions set using Part Position. Looking for some help