Power BI merge query in SSAS Tabular 1400

Hello guys,

In Power BI, I'm able to merge two tables easily because you can (even with csv files) add new queries and merge them in two clicks.

What I need is to reproduce the same merge in Tabular 1400. The thing is that the source tables are two CSV files located in different folders. I succeed making the merge in M language before the import.

Here are my tables

And here is the merge one So, as you can see it is working until there. But once I click on import, there is an error message saying that The name 'Table2' wasn't recognized. Make sure it's spelled correctly

So it must be related to the M language behind the merge but for me it is correct. Here is the M language

let Source = Table.NestedJoin(Table2,{"Name"},Table1,{"Name"},"NewColumn",JoinKind.LeftOuter), #"Expanded NewColumn" = Table.ExpandTableColumn(Source, "NewColumn", {"Name", "Age", "Country"}, {"NewColumn.Name", "NewColumn.Age", "NewColumn.Country"}), #"Removed Columns" = Table.RemoveColumns(#"Expanded NewColumn",{"NewColumn.Name"}), #"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"NewColumn.Age", "Age"}, {"NewColumn.Country", "Country"}}), #"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Age", Int64.Type}}) in #"Changed Type"

I'm a bit lost actually because for me the M language is good. Any idea how to figure it out ?

I found the solution. I was using an old version of SSDT. I replace it with the 17.4 version and now I just have to right click on the table while importing and uncheck Create New Table. That way, Only one table will be imported and the other one will be available for a futur merge.

If you need more informations let me know.