First, you'll need to export your programming from your old system (Wodify, SugarWOD, ZenPlanner, etc.). More than likely, it'll be sent to you in a .csv file.
Once you've downloaded that file, you can import it directly though the Track you wish the programming to be entered in to.
Step 1: Edit settings in the Track of your choice
Step 2: Click "Import/Export Data" in the top menu
Step 3: "Import workouts from another system" and choose the .csv file from your old system
Your workouts should then be attached to the track you chose. You can repeat this for all class or PT Tracks you've created and downloaded from your old system.