I've just tried loading an old version of a module (intentionallly - no SQL differences). The load apppeared to run Ok but at the end of the load report I get the following three lines (my translation from the Spanish):-
Job completed - The load to DNN complete sucessfully
Warning - Install aborted - - The module being installed is older than the version which is already installed in your host application
End of job - installation sucessful
Do you think it was or it wasn't?