Question: A Shul that has an old and used sefer tora that is kosher, although not a most beautiful csav [maybe also condition], they want to make a hachnosas sefer tora (IE $$$$) by taking away the last yeriya and ordering a new one written instead.
Is this permitted lechatchila?
After the fact (bdieved) if done are those that participate by buying/writing letters fulfill the mitzva of csivas sefer tora?
Answer: It is forbidden to release the last yeriya as long as it is kosher, since they are mevatel this yeriya from its mitzva, and paseling a sefer in vain.
Even after the fact [as long as the original yeriya is intact] they are not fulfilling a mitzva of csivas sefer tora.