major version downgrade request (4.0 to 3.6)
Right now I am running the MongoDB cluster on 3.6. Now I want to upgrade this cluster to 4.0. But when I want again to revert back to 3.6 I have no option to downgrade.
Use case :
Right now our production is running on 3.6, when we upgrade this to 4.0 and if we face any major issues on prod, then we have no option to get back to old version 3.6.
Without this option we cannot move our production to 4.0.
Note that it's not possible to downgrade after the Feature Compatibility Version has been upgraded, and generally we recommend running a test in a staging environment before upgrading production.
Please reach out proactively to MongoDB support about options.