Question: "In essence, are One Power and True Power balefire the same?"
Answer: "He answered that the True Power is another source of power, that Aes Sedai were researching another source, like a different form of battery, to power their weaves and that in for balefire, what it does is essentially the same between both Power sources, but that it has different affects on the individual using the Power source (this appeared to be a reference to what True Power does to its user)."

Indicates that TP balefire has the same effects, as we see in the books as well. Therefore I doubt that the DO could transmigrate Semirhage.

Besides, it was anyway her "one last chance", according to SH, so that the DO possibly wouldn't even want Semirhage anymore, even if it was possible to transmigrate her.