[atlas] RRDs for pings with 25 probes.

When I create ping UDMs with 20 probes, I get RRDs. When I create ping UDMs with 25 probes, the "visualize" checkbox gets turned off somehow and I don't get RRDs. Is there something funny going on? (or is there something else forcing visualize off that i have miscorrelated with the probe count). --