Bug? Voxel Data Animation Issue (Still Frame Number Keyframe not rendering) EDIT: I found a workaround to this (see post below), however, the keyframe input with Still Frame Only, does not work. So I can only setup a scene of duration my number of frame in the texture. 
Any clue how to work around this?

Original Question:

Either this is a rendering bug, or I'm missing a critical step texture wise.

I am trying to render a Time Voxel Data set. 
I have my 8 bit RAW file, with time series as Still Frames. 

When I select a still frame number it works just fine if I render one frame using F12, or Render (see image). So I know my texture file is good.

If I add Keyframe animation, the keyframe link works (see GIF), but then if I click on Animation to render the movie it renders all frames with the first texture and does not load the other frames (it doesn't take into account the key frame change on the Still Frame Number I guess?)

Anyone knows what I am doing wrong ? 

PS: I'm using BI rendering, as voxels aren't supported in Cycles yet.
Sorry about this, I figured it out.

It was my own mistake

I checked the option Still Frame Only. 
To anyone reading this, MAKE SURE IT'S UNCHECKED



Edit: I could not find any information about this online so I made a tutorial.
https://hackmd.io/s/rketOixDG