There has not been dialogue between Burmese leaders and Rohingya leaders except during the election....
This is a very important point you have asked about, I must say. This has confused the international community as well.
On the one hand, the Burmese government itself has being doing ethnic cleansing and depriving the Rohingya of rights, violating human rights. On the other hand, they have picked up three Rohingya MPs. So while they are saying that these people are not citizens, that they don't belong to Arakan in Burma, they have three Rohingya MPs in the military-run, militarist USDP ruling party.
So the military has been using these three MPs for dialogue. Basically, these MPs are good MPs. They all care about Rohingya. But they are also under pressure from the military government about what to say and what not to say. Any discussion or talk going on between the military-run government and the Rohingya is through these three MPs and nobody else.