Nah, in this scenario they stay as they are. No changing of beliefs for either individual. Still, i gather that there are believers and then there are BELIEVERS.
Hope you live up to your standards when considering the Uthman Recension. Can't find the page I'm looking for, but
this is a start.
The bold part is an assumption. Nowhere has Mohammed ever said the Bible/Torah was changed in any way whatsoever. There is however a passage pertaining to Mohammed criticising a bunch of jews of corrupting their scripture, but afaik there is consensus that he was criticising their corruption of the understanding of some verses rather than the corruption of the very verses themselves. When it dawned upon Muslim scholars that there were contradictions between the Quran and the Bible, some of them explained it away by using this verse in the Quran to claim that the Bible was corrupted. Also, none of the contemporaries of Mohammed ever thought of the Bible as corrupted; among others these included the first caliphs and his christian uncle who took down verses. This "corruption" business came on 100 years afterwards. And the coup de grace: The vaticanus codex. Has been the same since 350 AD or roundabouts, before Islam even came along. So altho Mohammed may have been illiterate, it wouldn't be too far fetched to say he had a pretty good idea what was going on in the Bible, yet as stated before, he never said it was corrupted (also see verse where Mohammed holds high reverence for the Torah).