Can't delete SHP connection

[jlai]

I connected a few .shp files in Map3D for references and now I want to removed these connections. All can be deleted expect one. Under the Verify Delete Connection table, I selected the Dependent Resources and click OK and nothing happen. It is still there. How can I get rid of it?

Thanks

[antoniovinci]

Make a _WBLOCK of all but the FDO connected objects.