I am still experiencing too much eyestrain and queasiness from the site redesign to spend more than a few minutes at a time on CH.
Hopefully someone else will step up to shepherd the quarterly and semi-annual Costco and Trader Joe's favorites/discontinued threads on the Chains board. In addition to rebooting them, you should report the defunct thread to ask the mods to add " [old] " to its title. The former threads will not be locked, but this will limit the new additions to them. Also, post a link to the updated thread at the end of the old thread.