Try new answer.Because I guess your motive is to help the user. And you are right few times too much edition of question do change the meaning of the original question.But the user who has asked the question has rights to edit it again. So if he feels that the question is losing its meaning he can re-edit it.You can ofcourse comment him asking that if he is luking for same question or does he has sumthing else to state.

Try a new answer because I guess your motive is to help the user. And you are right, few times too much edition of question do change the meaning of the original question. But the user who asked the question has the right to edit it again. So, if he feels that the question is losing its meaning, he can re-edit it. You can of course make a comment asking him if he is looking for the same question or if he has something else to state.