And they will, because they are different, which requires their listing the initials, as they are two different authors.
“It isn’t actually a mistake - the official APA style is supposed to display these initials in the in-text citations. The problem arises because no-one wants them to be there!” cited from UTS Website
In Endnote Web, I don’t believe you can edit the output style to remove this appropriate handling of two different authors. The instructions to copy from one record to the other, is to ensure the same author is listed identically into both records. In your case, this isn’t true.