I believe that the way the blue line joins the red is not the 'standard' Cave Route.
See the small white dot in this Photo showing the belay ledge we used at the top of P1. It is on a weakness that continues quite a bit up and right which matches much better with the marked photo in Mick Schein's "Sandia Rock" (page 59).
Any idea how hard it is to follow through to where red joins blue in the photo? Does it protect?