You may have just seen a MOIA around the corner, even though a different one was suggested for your booking request.
There could be several reasons for this. The MOIA may already have been booked by another customer and therefore didn’t have any free seats. It may have been that the next virtual stop could only have been reached with a detour. These and many other factors are taken into account by the MOIA algorithm in order to get you and your fellow passengers to your destinations quickly and conveniently.