Can I create a new iTunes folder and copy all existing folders into it?

I have developed two itunes libraries - one for commercial music, one for own music. And they coexisted for several months. Using the option/select itunes allowed me to choose one or the other. Absent any simpler cure, can I simply start a new iTunes file and then (in the os) copy all existing folders into this new iTunes folder?

os is sierra. iTunes is 12.8.2

thanks for any guidance offered.