Problem with saving in the training plan

Hi, I have a problem with one of my rides on Zwift. On March 19th, I was doing a training plan called “Dirty Destroyer,” the fourth ride of the second week. After completing the ride, I saved it as usual. Unfortunately, later on, I noticed that the ride was saved, but it wasn’t recorded as part of the training plan. Please help me figure out how to connect the ride with the training plan. My account name is BOB DEMON