Not even the LDS Church leaders can claim that their non-English Book of Mormon translations are taken from a first-generation source since the original gold plates are no longer available. All of the dozens of foreign translations of the Book of Mormon have been derived from the admittedly second-generation English rendition (see Ensign [May 1995]:10), making these translations third-generation texts. It would therefore appear that those who mistakenly claim that the Bible is nothing more than a translation of a translation or a translation would better apply their criticism to the Book of Mormon.
Bill McKeever and Eric Johnson, Mormonism 101, pg. 118, note 7.