Hi, Andy_F. Here’s a link to the bug report: Songs exported from BBMO 2.0.4 do not import into the BBM
Singular Sound has been working on fixing this and a beta BBMO is available from this link: latest beta here
Songs exported from the BBM can now be imported into the BBMO. Last time I tested though, I could not import a song into the BBM that was exported from the BBMO. YMMV…