How to stop images get deleted form cfs/files while mupx deploy

whenever i deploy the meteor app with mupx images from cfs/files are deleted

is there any way to stop this

i don’t want to use gridfs because it slows down the performance of site

found one solution may be not right

mupx deploy uploads the project on server /opt/appname/current directory

when we redeploy it it moves the previous data to /opt/appname/last directory

so my image in cfs/files are moved there

so i just simply copy cfs/files/ folders from last directory to current directory and my images are back

this is temporary solution but there should be something to stop this