Add Scenes???????????????????

hi, i am working on side-scrolling game, but bb3 engine is deleting previous scenes for perfomance, can enyone help me how to load again this scens??

 

Can you spell out exactly what is occurring? When are the scenes deleting, upon save?

 

Or are the scenes deleting during gameplay? That needs to be managed with Delete Scene threshold

 

I am talking about delete scene threshold i need to go back again in this levels, and need if there is script example to load again this levels