Are you saying that you applied several different effects, saved your project, then reopened it (in a different version) and all of the effects and animation you had applied were gone? What was left? Could we see some screenshots? Are you sure you're looking at your main composition through the active camera?
What happens if you open it in an older version?
This problem faced by me was a bit old, but had posted it on this forum only now. After receiving your response, I tried it once again... and everything worked just fine. I wonder what the problem had been at that time, but its gone.
Thanks for the response!