EDIT: Add new feature

[Jitendrudulacaraju]

I have two point layers. If a feature from featurelayer A is removed, it is moved to another featurelayer B as the requirement is for archiving deleted features of A in featurelayer B. Its not working some how. similar thing worked for an earlier app.
Found this error as well: RowError = "The fid value is invalid for a new feature, must be smaller than zero"
here is the code:

 MapLayer layerTS = Map.MapLayers["xxxx"];
                        MobileCacheMapLayer mblCl1 = layerTS as MobileCacheMapLayer;
                        FeatureLayer featureTS = (FeatureLayer)(mblCl1.Layer);
                        MapLayer layerRTS = Map.MapLayers["Removedxxxx "];
                        MobileCacheMapLayer mblCl = layerRTS as MobileCacheMapLayer;
                        FeatureLayer featureRTS = (FeatureLayer)(mblCl.Layer);
                        
                        FeatureDataTable ftableRTS = featureRTS.GetDataTable();
                        FeatureDataTable ftableTS = selectedDataRow.Table as FeatureDataTable;
                        
                        FeatureDataRow editRow = ftableRTS.NewRow();
                        editRow.BeginEdit();
                        editRow.Geometry = selectedDataRow.Geometry;


                        foreach (DataColumn clm in featureTS.Columns)
                        {
                            if (featureRTS.Columns[clm.ColumnName] != null && clm.ColumnName != "SHAPE" && clm.ColumnName != "GlobalID")
                            {
                                if (ftableRTS.Columns.Contains(clm.ColumnName))
                                {
                                    editRow[clm.ColumnName] = selectedDataRow[clm.ColumnName];
                                }
                            }
                        }


                        ClearDataTableErrors(ftableRTS);
                          ftableRTS.Rows.Add(editRow);
                        editRow.EndEdit();
                        cntEdit =featureRTS.SaveEdits(ftableRTS);
                        cntEdit = -1;
                        cntEdit = ftableRTS.SaveInFeatureLayer();




                        //remove from the  feature class
                        foreach (FeatureDataRow row in ftableTS.Rows)
                            row.Delete();
                        cntEdit = -1;
                        if (ftableTS.AllowModify)
                            selectedDataRow.Delete();
                        cntEdit = ftableTS.SaveInFeatureLayer();
                        ftableTS.AcceptChanges();
                        ftableRTS.AcceptChanges();