How to update with queryRun? - Version II

While trying to update a field in a QueryRun object I was receiving an error:
...No olvide TTSBEGIN/TTSCOMMIT y la cláusula FORUPDATE.

So, how do you update with queryRun? This link solved my issue, however there was a niggling feeling that it wasn't the optimum solution available. Here's an alternative suggestion:

/// Deselect (deactivate) all budget forecasts asociated with the project,
///   as it has just been cancelled.
public void EVE_wfCancelOperationDeactivateBFs(ProjId _projId)
{
    Query                   query;
    QueryRun                queryRun;
    QueryBuildDataSource    qbds;
    ProjForecastCost        pfcTable;
    ;

    query = new Query();
    qbds = query.addDataSource(tableNum(ProjForecastCost));
    qbds.update(true);
    qbds.addRange(fieldNum(ProjForecastCost, ProjId)).value(QueryValue(_projId));
    queryRun = new QueryRun(query);

    while ( queryRun.next() )
    {
        pfcTable        = queryRun.get(tableNum(ProjForecastCost));
        ttsBegin;
        //pfcTable.selectForUpdate(true);
        pfcTable.Active = NoYes::No;
        pfcTable.update();
        ttsCommit;
    }
}

Instead of calling the selectForUpdate(true) on the table buffer each time in the loop, we have it applied on the datasource qbds.update(true), which to me is more satisfactory.