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Background: when question is migrated from site A to site B and the author doesn't have account in site B, he will appear "gray" until he logs in to site B and associate the accounts, then the avatar show and all is good. No problems here, same for answers and their authors.

Problem: if user from site A posted comments while the question was still in site A, his name will stay gray and unclickable even after he logs in and have account in site B:

screenshot

This is the above question, but most likely it's global problem, not specific to that one occurrence.

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Nick already answered this elsewhere on meta, but basically comments don't contain enough user information for us to reliably map them in all situations. – Jeff Atwood Feb 21 '12 at 9:18
1  
@Jeff thanks, didn't see such answer. Isn't there user ID associated with each comment? Just the raw display name? – Shadow Wizard Feb 21 '12 at 9:23
    
@Haney since you added the deferred tag, any updates about this? – Shadow Wizard Apr 28 at 9:15
    
@ShadowWizard none at this time. It's not critical and we're slammed at the moment, but one day we hope to investigate further. :) – Haney Apr 28 at 15:58
    
@Haney thanks for the honest response! – Shadow Wizard Apr 28 at 17:57
    
@ShadowWizard all I can be really. – Haney Apr 28 at 18:08
up vote 12 down vote accepted
+100

Here's the answer Jeff's referring to on why this doesn't happen currently:
Comments by OP on migrated question become "anonymous"

We may revisit hooking up comments in the future, but it's not a completely trivial problem (e.g. should reply to hook up as well? that's more info that needs carrying over), and won't/can't be retroactive. That being said, I do have an idea on how to take care of this in a not terribly expensive way, I'll throw it out to the team and see if it's worth it.

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Cheers, good luck with that idea of yours - hope it will be accepted and implemented. :) – Shadow Wizard Feb 21 '12 at 11:13
    
At the very least, could commenters be notified in some non-expensive way that the question is being or has been migrated? – Aaron Bertrand Nov 12 '13 at 21:27
1  
Three years later, any update? – Shadow Wizard May 28 '15 at 21:00

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