Columns get deleted in query studio if changed in the model

[p55283]

We published a new model to our customers that had pre-existing query stidio reports.  All we did was to add items to a query subject, we did not change anything in the query subject itself.  Now, when you open an existing query studio report you get the following message eventhouhg the items have not changed:

The report must be updated because a more recent version of the package
exists, or because the report contains objects, such as members and   
levels, that are no longer in the model.                               

Then if you press OK from there some columns get deleted.  If you open the same report in report studio it works fine.  Anyone run into this problem?  I told my customer that the work around will be for them to open the reports in report studio but that is not an acceptable solution.  Anyone run into this before?

Thanks.