I'm losing my mind a little, and if anyone can help out I would be extremely grateful. I'm using Vegas Pro 13.0, and editing a lot of transitions using keyframes. I position them where they need to be, continue editing, and a while later (often after rendering a section of the clip) I notice that they've changed position, either becoming closer together, or moving to the centre of the clip, rather than the end (where I want the transition to be. This happens in particular with S_BlurMoCurves, from the Sapphire package. It's a big hassle to continuously correct, so I would be very glad to get any insights.