I'm tired of this
[addendum] so I realized that I was doing things wrong. When you want to obsolete an existing movie AND the game has a globally carried element (global timer, RNG, etc), you should start from the end and go backwards. This way you minimize the amount of resyncing you need to do. If you start from the beginning like I just did, you'll find nothing but frustration. So save yourself from draining all the fun from TASing and try obsoleting movies backwards.