I could able to use the Import Datasource button on the Model menu and pull the source tables for building, however, Tabular model explorer and the data source folders are missing or not being able to use from a project perspective. I have no luck with VS 2017 EE as well, the same problem there too. Tabular model explorer is greyed out in the View->Toolbar->Other windows. I searched many times, but there was no answer from MSFT or any other communities for this issue.
