Songbook housekeeping

[maintech]

If I delete a few songs from the PA600 Songbook, will the Songbook numbers assigned be available for new songs?

I have the Dopamine 2 set loaded, and I'd like to delete some content to allow other styles etc to be loaded into the gaps created. Is that okay? I do appreciate that this forum is not the Dopamine help center, however I cannot find support anywhere on the Dopamine website, but I know many owners have added it and may know if that is okay.