Maestro and the RMA

I’m fixing bugs in the Rhapsody2 to Rhpasody4 conversion utility, the rests were not in the correct height position.
I’m also looking for Rhapsody3 files for import testing.
I looked in the FileType database, that of Rhapsody4 is not there, it was however a software sold by Clares and then by APDL.
The Rhapsody4 File type is Rhap4 (&ad7)
From TechSpec, the header is:
Overall structure
_~~~~~~~~~~~~~~~
&50414852 RHAP
&59444F53 SODY
&30302E34 4.00
&0000000D