VOS -> 8.3.x migration

Is the 8.3.x version backward data-compatible with VOS? Can I expect things to work when doing backup restore from VOS database files? If not what’s the recommended way to migrate to 8.3.x?

VOS is based on Virtuoso 7.x which has a slightly different engine from Virtuoso 8.x, so backward compatibility isn’t implicit.

You can upgrade predictably from VOS to 8.3, but doing the reverse isn’t straightforward.