They were dropped from the tour, but the tour is run by a private company under licence from the BBC, so it wouldn't be the same producers as those responsible for the show.
Ironically (or perhaps not), Craig produced the last Strictly tour so, theoretically at least, was responsible for dropping the Jordans. That might seem logical given the spats between Craig and James, but I'm sure those are scripted and do not represent their actual relationship.
I imagine the Jordans come as a matched pair for something like the tour. The most boring reason for them not being wanted - that Alex was not doing the tour and there wasn't therefore a sleb partner for James - is probably the correct one. Katya partnered Robbie Savage on tour instead of Ola.