you can also use Code and add it to the click event your "Add RP Lines" button to add the records:
Code:
Private Sub cmdAddRPLines_Click()
Dim db As DAO.Database
Dim rs As DAO.Recordset
Dim fd As DAO.Field
Dim i As Integer
Set db = CurrentDb
' remove this line if you need
If MsgBox("Delete previous records from tblProdLines before appending records?", vbQuestion + vbYesNo) = vbYes Then
db.Execute "delete * from tblProdLines;"
End If
Set rs = db.OpenRecordset("tblProdLines", dbOpenDynaset)
With Me.qryItemList_subform.Form.RecordsetClone
If .RecordCount < 1 Then
Exit Sub
End If
.MoveFirst
Do Until .EOF
i = i + 1
rs.AddNew
For Each fd In .Fields
rs.Fields(fd.Name) = fd.Value
Next
rs.Update
.MoveNext
Loop
End With
rs.Close: Set rs = Nothing
Set db = Nothing
MsgBox i & " record(s) added to tblProdLines."
End Sub