Reference MapOfMaps and Reference Tables are (from the API perspective) the same thing. (The difference between the two calls is the keyNameTypes parameter. Without it, a MapOfMaps is created).
From the CLI and Rule filters though, they are different.
In the App, you can only create a Table. But if you already have a MapOfMaps - it will show up in the 'Table ' Section.
#QRadar#Support#SupportMigration