Houdini was designed to disappear people so they couldn't be---or more accurately, so they could be tracked to their deaths on Mesa. Cruise ship sinking, "terrorists" attacks at sports stadiums or business conferences (like Gail's husband demise) or "that is where they were usually at at that time when one of that barrage of explosions we are blaming on Manticore vaporized the place. That didn't quite go as planned. Zack was spotted on a ship/station camera and too many people who had connections were included in too many. There were records of ships leaving but I think (other than those which were carrying genetic slaves but were actually Houdini people) that there would be a large number of false names /or people who were alive but never left the planet were used to hide identities and -at the time- not questioned as they went though Manpower etc documents or on ships for which no questions would be raised about anybody coming aboard with a ticket and whatever else was needed. Like several transtellars taking fees and not asking questions.
How many people who left Mesa went to Galton? How many of those people who did go to Galton were anywhere other than on the orbital stations or fortresses that were destroyed in the fight with the GA, particularly the ones which were scuttled by the Galton leadership as part of "the plan". How likely is it that any records relating to Houdini or people who were received from that (particularly since Galton was such an insular system) were kept anywhere than those orbitals that were (long since) designed to be destroyed when the system fell to an attacker?
It goes on and on. Time, data and where to look for data.
Then the little problem that there were no "invisible" spaceships at Galton. Absolutely NO mention of anything like the G-Torps firing on the GA fleet from "outside" their position at the Galton System. No conventional weapons coming in on the GA from vectors inconsistent with where Galton was shooting from. Is it conceivable that Galton, with the capabilities of the force that carried out Oyster Bay, would NOT have used any of those weapons in order to essentially strike undetected at multiple ships of the GA force as many times during the conflict as possible?
If you can't detect the weapons till they open fire at closer than point-blank range, you might have noticed if you had ships blowing up because there was a grazer firing right next to them before their reactor lost containment. Didn't happen.
And it starts to be stretching things -given the way the Alignment has consistently behaved- that there isn't yet another fall-back position beyond Darius. How? Where? for how long?.....ah, but we haven't been really told anything other than that there are at least a couple of wormhole termini of the Felix Junction for which NO information has been supplied.
That the route to a Post Darius location includes one of those termini is likely. That it is on a regular schedule of flights back and forth with conventional impeller/hyperdrive ships through that wormhole even if the ships have to exit at Felix only to go immediately to the departure lane outbound for System Omega. There would also be a bunch of traffic from Darius to Omega just though hyperspace since if/when the Felix Junction is compromised and when Darius in interdicted and attacked by a GA fleet. ....yeah, I know, all the Alignment ships would have astrogators & engineers and Captains who would be nano-compelled to suicide by scuttling the ships and there would be Worms in the ships software to do the same thing if they were to be boarded. This is the Alignment we are talking about.
What fun