I received some advice from two researchers, which were helpful at the time. So, I mentioned the researchers in the acknowledgements section of my paper’s early version.
After the first draft, the paper has been substantially modified, and their advice is no longer that visible on the paper. Should I still keep the acknowledgement? I feel it is difficult to remove it, since the paper is being circulated between more than ten co-authors. I would have to give some reason, but then I don’t know if I look silly for saying that their advice was after all not so useful.
What to do?