Referendum conundrum

Both Miguel and Boz have discussions about the intimidation and undemocratic procedures (e.g. not allowing debate) used to pass three laws in Bolivia, which combined create a situation where a new constitution will go up for a vote on May 4, and another vote will determine whether only the national legislature can convoke a referendum, thus making the autonomy votes in Santa Cruz and Beni (on that same day) illegal.

In December, however, Evo Morales announced that he would convoke separate referenda on whether he, the Vice President, and the nine prefects should remain in office. It seems that about two weeks ago, a government spokesperson repeated the possibility in the event that negotiations failed. It seems that negotiations did indeed fail, so what happened to that proposal?