Variation on a theme this week, with the file tfl_51-358-_-y05-58452.xml.
This shows large number of stops with no sequence number, most one way and a few the other. The problem seems to be that the Farnborough Bus Garage stops have been replaced by High Street Green Street Green (e g 490009841OA is replaced by 490007494PA. This should have been fine and the only odd thing that I can see that might be causing the sequence numbering to collapse at that point is that the distance between the new stops and the next/previous stops at Shire Lane is missing each way (/RouteSections/RouteSection/RouteLink/Distance). My presumption is that the software expects this file always to be present.
There is no difference between days.