Hi Community

I have an issue with fluid source
How can I delete the source from final volume

I use the Volume mix and subtract but because my source and my pyro not have same resolution , the pyro source density exist in final volume.I just want simulated volume not source.
I need the SHOP or SOP or DOP tip's for this.
for exam I don't want source dust on top of mountain in this file

https://vimeo.com/176882107 [vimeo.com]

Thanks in advance
and sorry for bad En

Morteza