When using synchronization parameters to retrieve data from an MBO during a synchronization session, clear the previous synchronization parameter values.
MBOSynchronizationParameters param = <MBO>.SynchronizationParameters; param.delete(); param = <MBO>.SynchronizationParameters; //must re-get the sync parameter instance params.Param1 = value1; //set new sync parameter value params.Param2 = value2; //set new sync parameter value param.save();