During the migration process, VB Migration Partner may need to append the “Class” suffix to the name of a COM class, for example ADODB.Recordset. This mechanism is thoroughly explained in this article, where you can also learn a few ways to get rid of this suffix when possible.

It turns out that in some circumstances under Visual Studio 2010 the “Class” suffix must be removed. The cause seems to be a bug in Visual Studio that has been confirmed yet not fixed as of this writing, as you can read here and here.