It's possible that some screen effects can be lost if you create a SlingStudio project in an older version of the SlingStudio Console app and then open that project in a newer, updated version of the Console app.
Such "lost" effects could include:
All may not be totally lost, however.
Saved assets, such as lower thirds and text overlays, should be available in the SlingStudio Library:
Unfortunately, if you set up split view (split window) arrangements, those need to be recreated.