That was the first thing I tried and still the same outcome. Perhaps it is a plugin that was deactivated that left bad artifacts or a filter or something? Is there a way to better debug what is going on, pinpointing where the data is being converted or filtered?
I put a value (ie: test_name) in the Name field and when I save/update it, it saves as the values you see there a:18:{s:4……
For some reason, the values entered are being stored as serialized values on save.