In a thread for which the OP had accepted an Answer the OP then continued a discussion by posting some revised code as another Answer to the thread. Several comments were posted to this Answer by myself and the OP. Upon returning to Q&A I noticed that the Answer posted by the OP as well as all the related comments (including mine) had been deleted. There was no indication as to whether the deletion was made by the OP or a moderator.
Where there is no violation of Q&A policies I find it troublesome that someone other than me can delete my comments on a thread. I suggest that this be prohibited.