In what version of LMMS is this?
Yes, you can manually edit the Project in a code-editor, and set all param 'open 1' to 0is there any other solutions?
If you know how to code.
You are welcome to IM me a link to the project in MMP format, then i can do it for you, if you do not know how
Again
In what version of LMMS is this?