Eu tenho este código:

declare @ReportLines table 
    (RebateInvoiceID int, 
     RebateSetupID int ,
     ShortItemNo float primary key(RebateInvoiceID,RebateSetupID,ShortItemNo),
     TotalAmount float,
     InvoiceTotal float,
     TotalQuantity int )
insert @ReportLines
select
  i.RebateInvoiceID
, coalesce(rs.WholesalerRebateSetupID,r.RebateSetupID)
, bl.ShortItemNo
, sum(round(r.Amount,2)) as TotalAmount
, sum(round(TotalAmount,2)) as InvoiceTotal
, sum(r.Quantity) TotalQuantity
from
  @Invoices i
  join RebateInvoices ri (nolock) on 
    ri.RebateInvoiceID=i.RebateInvoiceID
  inner loop join Rebates r (nolock) on
    r.RebateInvoiceID=i.RebateInvoiceID       
  join RebateSetup rs (nolock) on
    rs.RebateSetupID=r.RebateSetupID
  join BidLines bl (nolock) on 
    r.BidLineGuid=bl.BidLineGuid
  join @Products p on
    p.ShortItemNo=bl.ShortItemNo
  left join ChargebackDetailHistory cd (nolock) on 
    r.DocumentBranchPlant = cd.DocumentBranchPlant
    and r.DocumentNumber = cd.DocumentNumber
    and r.DocumentType = cd.DocumentType
    and r.LineNumber = cd.LineNumber
  left join EDI.dbo.JDE_SaleDetail sd (nolock) on 
    r.DocumentBranchPlant = sd.BranchPlant
    and r.DocumentNumber = sd.OrderNumber
    and r.DocumentType = sd.OrderType
    and r.LineNumber = sd.LineNumber

where 
    cd.InvoiceDate between @BeginDate and @EndDate
    or sd.InvoiceDate between @BeginDate and @EndDate
group by
  i.RebateInvoiceID
, coalesce(rs.WholesalerRebateSetupID,r.RebateSetupID)
, bl.ShortItemNo

Quero somar a coluna "Valor total da fatura" na coluna "Valor total". Quando eu executo a consulta acima, recebo um monte de totais estranhos. O total da fatura deve ser um número para cada linha e ser consistente com o rebateinvoiceid desde que é o que é agrupado por, correto?