MODX 3.0.0 Custom Property Sets do not display

[PeterBcreates]

1. Upgraded from 2.8.3 per the instructions to 3.0.0. The getResources custom Property Sets did not work, were not displayed the Property Sets. I created a new Property Set with the same name and got an error stating that it already exists.

So I cleared the cache, logged out, logged in, clicked on the property sets and only the default Property Set displayed. I created a new Property Set and got the same error: it already exists.

Here's the Screenshot:

2. I forgot that I can look at all Property Sets, so I opened them up and there was my original Property Set WindsorArticles:

Note all of the triangles in that screenshot. It showed the associated Element for the new Property Set WindsorArticles3. I opened them all and only the new Property Sets I created after upgrading to 3.0.0 display the associated Element:

3. Is it possible that this error was caused by the 2.8.3 install not having Collections installed prior to the upgrade? I installed it and within the element getResources, those prior Property Sets do not display. I clicked on the Versions (VersionX) tab and see that I have versions go back 10 years ago.

If you need to poke around in my Cloud, or need further clarifications, just let me know.
Peter