Short answer: NO.
Longer answer: snapshots are now AFTER 4.2 and BEFORE 4.3 is tagged.
Even though 4.2 is not yet officially supported.
The upgrades go from one supported release to another.
Anything in the middle ((almost) all snapshots) can be a bad mix
of old and new and do not mix well with either before nor after.
You should get a small flurry of answers from people who know why.