no i didn't use persist behavior. This is a single layout project with width 20000px. object is moving from left to right.
but i think problem is C2 to c3 conversion.
Original project was made in C2 and now i have switched that project to c3 i think this is the reason problem. I have tried by deleting all objects and events from the project except one and give that object bullet behavior and then tried on mouse click do restart layout. but still not restarting.
So now i am recreating project by re importing all objects from folder and then i will do copy paste events.
I hope it will work.