No problem, but I would like to mention what that particular line does.
TMPFS stops the files in that directory from being written to disk. It gets written to ram instead, many people using SD cards like to have this feature as SD lifespan is limited to number of writes.
One of the side effects as you have seen is that all info in that folder is lost on reboot, so for programs that need files in there, one will have to run a script at boot to create the directory and handle ownership.
Hope that makes things clearer about what happened.