When would you replace a generated vocal phrase?

[JackLync]

One sustained note in our current song sketch has an odd metallic tail. The rest of the phrase works for the melody, and my writing partner wants to keep its timing. Regenerating the whole passage seems like a large change. We can try another generation of the same musical passage, but that might also replace the little pause that makes the line convincing. I started looking into ai music artifact removal as one possible route, without assuming it can rescue this particular note. At this stage the goal is a workable composition demo. There is no release deadline attached. Would you first shorten the note, replace that phrase, or test a conservative cleanup on a copy? I am especially interested in the tradeoff with expression. A small imperfection may be acceptable here. What would make you abandon repair and regenerate?