I remember reading in my research, I'll try to find it, that it becomes more of an issue the longer you leave the beer in primary. I do not think it matters in the short-term, but becomes a problem in the long-term. That is why I posted above not to keep the beer in primary for an extended period of time if there was a lot of cold break. I don't know how long you guys leave a lager on the cake, but I keg after 3 weeks (so long as I had a good fermentation and reach FG) and lager in the keg. I try to lager 6-8 weeks minimum but usually break down earlier....I lost a primary carboy in a closet for a year, it was cool but not cold. That beer won BOS. I don't recommend doing the same, but it's not a black/white issue.
Tom, totally agree. Never meant to imply it was. Just trying to help with some of the reading I have done.
How do you lose a carboy for a year? What style of beer? Cool story.