Pick up existing data

[Blazkowicz]

Is this button for multisession disc or which purpose does this button have?

[mastermind]

I wonder the same thing. The button has always been inactive with the discs I have inserted.

[SUPPORT4]

Yes, it is a kind of "multisession disc" mode. But not exactly. This option is to keep the "old data", to build in the existent information into the new project and save it together with the new objects.