Delete Portal Row does not seem to be working correctly. Some work some don't... Changing the Allow Deletion of Portal Records has no effect on preventing or allowing deletion.
I do understangd that this is a major version update... and I am reasonably certain that FM will address the many issues that I and others find... but based on the testing I have done so far... I think FM12 got out of the cage a bit before it was ready. At this stage I will NOT deploy or convert anything to FM12 until it is fixed.
Feels like a beta to me.