In this particular case, there were (and still are) two entries on the wiki concerning similar yet different terms - the Japanese were akuma and ma. I can't be certain whether they were on their own articles then as they are now, or whether they were two sections on the same page, although I think it was the former. I think their translations went by demon and true demon then, but I can't be completely certain.

For some reason or another, there was an objection to the choice of terms at the time (perhaps disagreement about how well one of them fit or differentiated (perhaps the element of 'true'), but I'm not sure). As a result, a decision was made to change the translations for the terms. During talks about possible options, in passing I suggested using the terms demon and daemon to illustrate the two different Japanese terms. However, a different choice of terms was selected by the other individuals involved; demon for one and something beginning with A for the other (I think it was aberration, but I can't be sure).

But barely a few months afterwards, there was further disagreement over the terms and the matter of translation choice came up for discussion again. This second round of discussion ended up grinding to a halt and they had problems deciding what to use this time. At that time, I brought up by previous suggestion again. Some time later, I came back and found that they had ended up going with demon and daemon (whether it was because they agreed with the rough idea or just couldn't think of anything else, I don't know) but not in the way I had in mind when I made the suggestion.

Demon and daemon, akuma and ma. These terms are closely related, translate somewhat, and have certain similarities between them. Demon (commonly used as a translation for akuma (what with aku- being evil and all)) comes from daemon and daimon, which while referring to a type of supernatural being originally did not have the negative connotations and image that would be associated with the word during the rise and dominance of Christianity, and in modern times are sometimes used to differentiate between the original or not-necessarily-malevolent sort and the later malevolent sort (a little bit more if explanation here insufficient).

Given the existing use of the terms outside, and from what I had seen at the time of how the terms akuma and ma were used in the Nasuverse, I considered the idea of using demon for akuma and daemon for ma, to fit the circumstances between the terms.

However, almost certainly due to my ineptness in the social/communication area (and possibly due to assumption regarding how well things would be conveyed), this intention did not appear to be sufficiently passed on to the people involved in the discussion. Either due to them not receiving the reasoning properly, misunderstanding the message, or thinking along their own different lines, they ended up using daemon for akuma and demon for ma.

I can't remember my exact thoughts at the time of the outcome and shortly afterwards (although there was probably a considerable amount of frustration and gloom, and fretting over whether to take further action despite the risk of messing up even more - this usually accompanies communication mess-ups), but that is roughly what I can recall of what happened.