Adding time to a wait step with contacts in it?

Let's say I've got a wait step that's 7 days long. And I've got a contact that's been in it for 3 days. I disable the campaign, change the wait step to 14 days, and reactivate it. Will the contact that was in it flow through after 4 more days (the original period when he entered the step) or in 11 days?

Thanks.