Translations from one language to another do trigger a copyright. But, it's hard to see a derivative copyright qualifying under a "translation" when the editing involves systematic (and therefore, by definition, uncreative) changes in spelling.
Also saw the post by Bradley S. Cobb But Josh is listed as Administrator
You are the ones that has to "worry" about those things so will leave it in your hands
I Have WORD 13 and it does PDF to DOCX files. Have it running against a DR 1582 PDF - how do I drop you a file? {I am new here}
May take a while and not sure that it will not crash {maybe too big} [be back when it quits - one way or the other]