This is not a SU moderation policy, but a [network-wide feature][1] and can't be changed per site: Questions older than 60 days can't be migrated, period ([another meta.se discussion](http://meta.stackexchange.com/questions/151890/disable-migration-for-questions-older-than-60-days)).

I don't see any real value in this anyway. We also don't migrate questions that *might* live on SU and close them instead and we answer Unix questions that are not really off-topic, but would be *more* on topic on U&L.

And both Puppet and Munin can be used in  hobby/home environments as well, which would make the question off-topic here.


  [1]: http://meta.stackexchange.com/questions/10249/what-is-migration-and-how-does-it-work