update open buildings cell with a prostructures cell

I am trying to update an open buildings cell with a prostructures cell. the open buildings cell has been located in real world. the prostructures cell (dgn.) has been located close to 0,0,0 . I have tried to replace the open buildings cell but when I do the prostructures cell inserts at 0,0,0? ant ideas?

do the design file settings need to be exactly the same ? the prostructures cell (dgn) is not getting the insertion point information from the open buildings cell?