Thanks, Rick! So what do you suggest when there are two different profiles representing the same person, but with different parents - because of these discrepancies between sources? For instance, Otterbach-40 represents Johann Henrich "Henry" Otterbach, son of Johannes (b. 1659), according to the Holtzclaw source. Utterback-232 represents the same person, but according to the Utterback book, he would be a son of a different Johannes (b. 1702) - even tho this profile doesn't have parental links, it could. The two "Johannes"s are two separate people under different parts of the family tree. Some of the children of these two "Henry"s are the same, others are not.
If the two Henry profiles are combined into one (according to the most reliable source, believed to be Holtzclaw), more than likely, in the future someone else will create another Johann Henrich to follow the Utterback book source.
If both profiles are left, with their parental links (if they exist), one could put a Research Notes section in each, saying that that profile follows either the Holtzclaw or Utterback source. This would keep the incorrect one from getting created again in the future, but also perpetuates the inaccuracies of the Utterback book source, as well as goes against the "one profile" rule.
I'd say the first option is preferable, but how do we prevent this from happening time and time again (with these particular profiles)?