3.6 beta download documentation should note that uploads become impossible and downgrade difficult.
I wish the 3.6 beta documentation had warned me about an issue before I downloaded and used it.
I ran the 3.6 musescore on a good working file, made changes and saved, and then found i was unable to upload to the musescore.com site as the software said that uploads from the beta version were not allowed.
Seeking to get around this, i used the website upload which pretended to work including reaching 100% processed but never finished saying "uploading" and not showing a useful preview (i deleted the upload).
I then tried opening the file with 3.5.2 version and it said it could not open file created by new version.
After some web searching and intuition, i found a workaround!
I used the 3.6beta version to change the Score Properties -> mscVersion field from 3.02 to 3.01, saved the file and tried the 3.5.2 version again...
this time it again said it could not open file created by new version but there was an "Ignore" button which I hit... after making a minor change and hitting File -> Save, i was saved!
(I did not detect any damage to the file from it's excursion).
Could you please warn about these problems (particularly the upload limitation) in the 3.6beta web page and possibly document the above mentioned work around for downgrading?
Thanks again for the great work. Sorry i am likely discouraged from further testing of the beta.