Flow disappeared but running

I have 1 flow that disappeared but still running. How can i retrieve the nodes of that flow.i can not deploy the NR. I check the flow_.json and seems the nodes are there but the flow statement is not.

If you look in your flows directory there is a hidden file which is you previous deployed flows.

If you are on a unixy OS
cd into your node-red directory and ls -altr and it’s the flows file that starts with a .

Copy that file to a new name and then restart node-red using that flows file (see the docs on how to specify a file name)