Material list is doubling up on materials

[ONO_Customs]

I am running X15. I decided to redo a project in a different template plan. My master list would not populate at first. I imported it from the previous job and it started to double up the materials within the master list. Im not sure how to proceed and get rid of the duplicates. Also, certain materials that had pricing from the previous project would not update pricing from the master list. Thank you!