This error just started showing for ALL folder imports I perform:
Failed to save modifications to the server. Error returned: 'OLE DB or ODBC error: [Expression.Error] The import Transform File matches no exports. Did you miss a module reference?. '.
If I open the Query Editor and then Close & Apply, the data loads without an error.
I first noticed the error when trying to import data that I've imported many times before. The datasets are CSVs and haven't changed as it is a folder of sample data.
I deleted and reinstalled PBI Desktop from the Store, but the error still appears. I am running Version: 2.82.5858.1161 64-bit (June 2020).
I cannot reproduce the issue. You may directly create a support ticket for assistance.