HI does anyone know how to use the keep the matched animation found in the vellum constraint node from working when using the vellum solver inside dops. If works fine when solving in SOP lovel, but looses all of the aniamtion when solving in dops.

Blank out the fields on the vellum object, and use a vellum source instead. A vellum object will only read from the first frame, a vellum source can update every frame if required.