Currently, weekends get counted as days between steps, even if the sending window is set to Monday-Friday. Lets say I send an email on a Friday, and the next step is an email if no reply in 3 days. Currently, PersistIQ will send that second email on Monday, despite my Mon-Fri sending window, when in reality, I want that email sent on the Wednesday (3 business days after Friday).
Days between steps should follow the sending window set up in the campaign.