Dear Carnut,
I do know that, as a Pro, I cannot post answers in the Rookie section. I thought, that agreeing at the most with luisps' obviously correct identification, I hadn't.
Reading again the question I see that you asked for some details that were included in the picture I've attached, and so I did. My apologies to you and luisps.
Now, about acceptable or not acceptable reposts, I believe it's purely a matter of opinion and I don't pretend to impose a rule about it. Neither should you, I think.
It's also true that it's best to inform the poster by PM, which I usually do. Here I posted directly because i assumed (wrongly I see) that this one had been solved.
I also suggest that you pay more attention to possible re-posts when adding new puzzles. The safest way is not to use the search function of Autopuzzles, but to type the identification elements that you have in Google advanced search, domain autopuzzles.com. I fouhd it right away with that method.
And of course this one cannot be merged with a group puzzle. Let it live a life of its own.