If it helps, when i ask a similar question to BobCad, this is the answer I received:
The translate w/ a scale doesn't work on bobART surfaces, but if you go back to the BobART tree and edit the stock first and set that to the new size, then edit the emboss item in the tree to the same size, you can right click on Emboss Model and choose "Regenerate", which should rebuild it to the new size.