Does the new projector have a UV filter in place? If it has a separate one u might have to remove it. Don't remove the filter that protects the innerds of the projector from IR (heat that will destroy components). If it's a single filter u might be able to replace it with one that only blocks the IR (infra red/heat). Others that know more about this will have to comment.
Just thinking outloud.
Dance like nobody's watching!