Conversation so far:
What was the highlight of 2012 for Cold War Kids?
In January 2012, Cold War Kids announced that former Modest Mouse guitarist Dann Gallucci would take Jonnie Russell's place in the band and premiere on their new single Minimum Day.
What happened to Russell from Cold War Kids?
On February 2012, Cold War Kids announced that lead guitarist Jonnie Russell left the band due to personal reasons.

Question: When did they work on Dear Miss Lonelyhearts?
Self-contained rewrite: When did Cold War Kids work on Dear Miss Lonelyhearts?