I wonder why the result is changed?

Hello. I have a problem.
I simulate lots of time with same geometry and same condition.
But when i open new Comsol and set same way before, but the result from new one is
different from previous one.

I don't understand how to do that?
I didn't change all of conditions. such as mesh and boundary and so on.
But i got another result...
I'm very confused...
What happen to this simulation?...

If you have same problem and resolve or know the reason, let me know please...

Best regards

Jihwan