Babar and Rizwan are part of the ODIs and they haven't changed their approach yet. In the CT matches against New Zealand and India, as well as the first ODI in New Zealand, at least one or both of them played too slowly while the batter at other end was going at a good rate (Saud/Agha), which cost Pakistan. In the first ODI in the West Indies, they operated at a strike rate in the low 70s while chasing 285. Fortunately, Hassan Nawaz and Hussain Talat stepped up. They are extremely stubborn and bringing them back would result in them gaining control over the team, which would push Pakistan cricket further back in the limited overs.
Many of their fans say that Pakistan has only had mixed results in this format this year. However in ODIs, Pakistan has performed poorly. So, Pakistan is doing better in formats in which they have been dropped than in the ones they regularly play. It should also be noted that ODI format is more suited to their style of play than T20s.