Fried's surgery conjecture for suspension pseudo-Anosov flows

Let $\Phi_1$ and $\Phi_2$ be suspension pseudo-Anosov flows. A Dehn-Goodman-Fried surgery is a surgery performed on a periodic orbit of a pseudo-Anosov flow to produce another pseudo-Anosov flow. Fried's surgery conjecture. Given any two suspension pseudo-Anosov flows $\Phi_1$ and $\Phi_2$, one can obtain $\Phi_2$ from $\Phi_1$ by performing a finite number of Dehn-Goodman-Fried surgeries. This would give an analogue, for comparing suspension flows, of the classification supplied by Fried's surgery theorem; the broader question of whether every non-transitive pseudo-Anosov flow can be obtained from a suspension flow by finitely many such surgeries is also stated as open in the surrounding discussion.