Please add the ability for end users to set the "last run" date and time formulas will use when determining which records to pull from Mailchimp. This way if some process is run affecting a lot of Mailchimp records at once we can avoid getting thousands of records in our Mailchimp-sourced formulas that don't really need to be processed, by setting the "last run" date and time to a point after the Mailchimp process was run.