A few issues on score created in 1.3 when opened in 2.0 b1

Hello, the attached was written in Musescore 1.3 on a Windows 7 PC.
These issues are not present when the score is opened in 1.3, but when opened in 2.0 a few quirks appear.
In measure 5, notice the beam with no notes attached between the piano & baritone staves, which is present only in 2.0 b1.
In measure 13, the cross-staff beaming in the piano is missing in 2.0 b1.
In measure 93, notice the quarter rest on the fourth beat which is only there in 2.0 b1.
A lot of manual adjustments were made to the original in 1.3, which may explain all or most of these; there are probably some other issues that I missed.
If any or all of these have already been noted for correction in the next release, then great; I don't need immediate resolution since none of these affect playback which is my main concern. I definitely prefer the piano playback in 2.0 b1 which sounds less "bombastic" than in 1.3.

I recall reading on one of the forums that the Salamander SFZ for the Zerberus synthesizer would be available for 2.0 b1. I don't see it there, can someone provide direction on this?

Thanks very much!