Import a saved favourite into an existing rack space

I have saved three midi blocks as a favourite, and need to copy the favourite into 500 existing rack spaces. How do I do this please?

I found a workaround. I opened a second instance, selected the three midi blocks, then copied and pasted them into where they needed to be. It worked, but is there a better way?

What are these thee midi blocks for?

And why do you need a second instance or a favourite to copy/paste?

Thats a very good question. And of course, you don’t. Thanks for allowing me to see that:)