Here we go again.
The thing is that there is a difference in interpretations on what is jhana: one side interprets it as a state in which you don't feel the body and are unnable apply that concentration to vipassana (hard jhanas); the other side interprets it as a state of concentration which is fluid enough so you can feel your body and apply that concentration to vipassana (sutta jhanas).
The thing with the vipassana jhanas is that they are basicaly the sutta jhanas applied to investigation of phenomena: vipassana jhanas. Since this experience of jhana applied to insight came up in the context of an understanding of jhana as hard jhana, they called those states vipassana jhanas. But basicaly they are jhanas being used to get insight
And the Blessed One addressed the bhikkhus, saying: "Behold now, bhikkhus, I exhort you: All compounded things are subject to vanish. Strive with earnestness!"