I have a pre comp with collapsable transform on because i need the blending modes inside the precomp but when i duplicate it add a mask to it collapsable transformations doesn't work anymore. Im creating a loop so i need the duplicate to have the same blending modes as the original. I tried to use a track mat instead  of the mask on the layer but this also disable collapse transformation.

Is there a way to use masks on  layer without disabling collapse transformations ?

Thank You

Dan