Thank you for the explanation. I get what you mean, I don't mean to embarrass anyone obviously. I honestly don't know much about the whole mapping itself and the 'nodes' I see, often a name change is only a small part of a set of many changes made, and I don't know which node corresponds to the particular name change.
Sources are often missing as well.

I understand your explanation, I do check what has happened, communicated, edited and mapped before. 

I'll store your comment somewhere and refer to it when I have doubts.

Thanks again, take care.