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I've just noticed a question migrated from SO to which I had added a comment. The OP had replied to it, but only his comment is now visible.

Is keeping only the OP's comments the normal behaviour?

There were a few links/pointers that should have been of interest for this question (I thought they were not sufficient for a full answer), and it makes his comment sound a bit awkward, since he's answering mine.


I've reposted a slight variation of my initial comment. I've noticed that the second comment had disappeared, but I'm not sure whether the OP deleted it or if it was someone else.

The overall question, it seems, is that when the comment contains a link to another question (or something else) on the site where the question is to be migrated, the comment is deleted altogether.

I understand it makes sense to delete a comment that says:

Voting to migrate to [ServerFault](

but not:

Voting to migrate to ServerFault.
By the way, this is similar to and ...

Assuming that is the same as sounds like a bug.

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migrated from May 16 '12 at 1:27

This question came from our discussion, support, and feature requests site for system and network administrators.

I don't know where your comment went; it doesn't seem to have ever come over. It's not even in the deleted list.

I'm guessing it's because you mentioned you were migrating it to Server Fault. My guess is that comments that mention a migration target are removed under the assumption that they were only a comment along the lines of Off Topic belongs on Server Fault which is kind of a useless comment when it actually gets here.

Because of this, I'm going to migrate this to meta.stackoverflow where hopefully it will get developer attention.

share|improve this answer
For future reference, no need to migrate - we keep an eye on all metas. :) – Adam Lear May 16 '12 at 1:30
Also, yeah. I believe comments that mention the destination site will be removed in the migration in an attempt to cut down on noise. – Adam Lear May 16 '12 at 1:31
@AnnaLear Argh, I've been deleting those by hand... – Yannis May 16 '12 at 1:48
It's only if they include a link – Michael Mrozek May 16 '12 at 1:57
@MichaelMrozek, I can understand why there would be an automatic rule to delete comments that talk about the migration itself, but I don't quite follow the rationale for removing comments with links. – Bruno May 16 '12 at 2:08
@Bruno I meant it's only if they include a link to the target site. So "migrate to serverfault" won't get deleted, but "migrate to serverfault" will – Michael Mrozek May 16 '12 at 2:18
@MichaelMrozek, ah, I see, but mine didn't really include a link to SF this way: it linked to a specific related (but not duplicate) question. – Bruno May 16 '12 at 2:34
@Bruno It included a link to SF; that's all that matters – Michael Mrozek May 16 '12 at 2:57

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