Containers wiped after update

Unfortunately, after accepting the prompt to update docker for mac to the latest beta version, upon restarting docker all of my previously installed containers (and the data associated with them) needed to be reinstalled… Also unfortunately, I was a bit distracted during the update process and didn’t notice anything to indicate this was going to happen.

Expected behavior

Docker updates, everything is as was before.

Actual behavior

Docker updates, everything needs to be reinstalled.

Information

OSX 10.10.11

Steps to reproduce the behavior

  1. Update Docker
  2. Validate that containers exist in the previous state?