Summary: Upgrade resulted in broken Views due to modules not enabled and erased View style settings.
I have a site that was using 6.x-1.0-beta5 until I noticed the recent(?) change to make 1.x be unsupported. This prompted me to install 6.x-2.0-rc2 and run Update. The process completed without any errors or other notifications. I was then surprised that my Views using Views RSS stopped working. Upon editing them and selecting preview, I received a notification that I needed to enable the Core Elements module. Upon enabling the this other module, I no longer received this error on preview but still did not have working Views. Upon further investigation, the settings for my view style (RSS Feed - Fields) were erased in the upgrade. I had to try to recall how I had these setup before the upgrade and am still making adjustments.
The fact that there was no warning of erased View style settings is the most disconcerting. In fact, the reality that NOTHING was mentioned about broken views or additional modules needing to be enabled is something that needs to be addressed. I suggest the following.
- View style settings should be preserved.
- Message upon upgrade completion that Core Elements module will need to be enabled.
- If left unresolved, warning of these issues on project page.