As far as I can see, the Appleby - Penrith RRB is not being loaded into journey planners at all. Just to take one example, Northern's timetable leaflet 7 shows a RRB departing Appleby at 1454 M-F, arriving Penrith at 1524 and connecting with the 1530 VTWC service to Glasgow Central, arr. 1701. But if I ask Northern's own journey planner for Appleby to Glasgow around this time, it only offers the 1445 train from Appleby to Armathwaite, changing to the 1531 bus from Armathwaite to Carlisle, then the 1647 VTWC service from Carlisle to Glasgow Central, arr. 1801 - an hour slower. This is the same for today, tomorrow or next month and the same on NRE.
A further issue is that, if you click on "Service Update" at the top of Northern's homepage, it gives a link for "Engineering Work Carlisle - Settle - Leeds" that actually takes you the main "Route Improvement - Improvement Works" page. That page only lists the near term engineering works on other routes, not the Settle - Carlisle works! To find information on the RRBs, you have to scroll right down to the bottom of the homepage, then click on a link "Latest Route Improvement - work affecting Leeds to Carlisle train services", then click another link to find the timetable.
I think all this matters because Northern's replacement buses are presumably ultimately subsidised by the taxpayer. Yet users of online journey planners are being directed on to slower, less convenient services even when making journeys the Appleby - Penrith RRB is intended to serve. And I wonder if the booking office and help point staff at Glasgow Central and Edinburgh Waverley have topical information about the Penrith to Appleby buses?