hi Kristen, I just ran a controlled test in my preview environment. Create Project 1, and create task named "test task" with Must Start On constraint. My Project 1 is set to schedule from a start date of 4/12. Create Project 2, and copy over test task in Project 1 to Project 2. I set my Project 2 to schedule from a start date of 4/1, just to see what would happen. The copy seems to work fine (I did another copy of a task with "Fixed Dates" constraint and that also works fine). There may be something else in your environment that isn't being mentioned, and is somehow affecting your tasks, but I honestly wouldn't know where to begin troubleshooting. But if you create a simple test in your environment and that works, then I would start scrutinizing your larger project more closely. PS: if it helps, I just ran a test task copy with a constraint of "ASAP" and this behaved as expected: it adjusted its date based on the project's start date. -skye