[Zubersoft]

I think you are making some incorrect assumptions about how things are stored in MobileSheets. It's important to note that there isn't a one-to-one correlation between songs and files, and songs are containers for data and contain the file paths that link to the files they use. This is important because you could copy files into the storage location but MobileSheets will be completely unaware of their existence unless a song in the library references them. When you import a .mss file, the only thing that is listed in the mss file is the title of the song. MobileSheets then tries to look for a song in the active library with that title to add to the setlist that is being created or updated. If no song exists in the active library with that title, then it can't add it to the setlist. It doesn't matter if a song exists in the other library - the only thing that matters is whether the songs exists in the active library, and since you created a new library, the song doesn't exist in that library. That is why I said you have to transfer the song between the libraries using a .msf file. I've mentioned this elsewhere, but I do plan on adding more options to make it easier to transfer songs between libraries, along with options to more quickly switch between libraries without having to dig into the settings screen.

It doesn't matter how your files are structured or where they currently are - MobileSheets is only going to look for songs in the library (i.e. entries in the database) when importing a .mss file. 

Mike