I have this query which generates the below report

select
RN,
DateCompleted,
GtrReference,
SourceWarehouse,
TargetWarehouse,
DateCreated,
EntryType,
ControlAccount,
InitialValue,
Operator,
FirstDesc,
SecondDesc
from
(
    select
    row_number() over(partition by a.GtrReference order by a.GtrReference desc) as RN,
    --concat(d.TransfCompYear, case when len(d.TransfCompPeriod) = 1 then '0' end, d.TransfCompPeriod) as DateCompleted,
    a.Complete,
    d.Line,
  d.TransfCompPeriod as DateMonth,
  d.TransfCompYear as DateYear,
  a.GtrReference as GtrReference,
  a.SourceWarehouse as SourceWarehouse, 
  max(a.TargetWarehouse) over (partition by a.GtrReference) as TargetWarehouse, 
  a.DateCreated as DateCreated,
  COALESCE(d.ExpectedDueDate, d.ExpectedDueDate) as ExpectedDueDate,
  a.EntryType as EntryType, 
  a.ControlAccount as ControlAccount, 
  max(a.InitialValue) over (partition by a.GtrReference) as InitialValue,
  a.Operator as Operator,
  b.Description as FirstDesc, 
  c.Description as SecondDesc,
  e.TransactionTyp as Movement,
  e.TransactionDate as DateCompleted
FROM 
    [GtrMaster] a  
    LEFT JOIN [InvWhControl] b  
     ON (a.SourceWarehouse = b.Warehouse) 
    LEFT JOIN [InvWhControl] c  
     ON (a.TargetWarehouse = c.Warehouse) 
    LEFT JOIN [GtrDetail] d  
     ON (a.GtrReference = d.GtrReference) 
    LEFT JOIN [GtrTransactions] e
     ON (a.GtrReference = e.GtrReference) 
) as i
    WHERE ( i.EntryType = 'W' OR i.EntryType = 'S' ) 
    AND i.Complete = 'Y' AND i.GtrReference <> '' 
     --and i.Line = '1'
     and i.DateCompleted >= DATEADD(hh,0,dateadd(DAY, datediff(day, +90, getdate()),0))
     --and InitialValue = '4732.53'
     and Movement = 'I'
    -- and RN = '1'
    ORDER BY i.DateCompleted desc

For some reason, I'm getting 2, 723, 724, 725 etc for row number instead of iteration.. But when I run the query outside the subquery, i get the correct row numbers.. so

select
    row_number() over(partition by a.GtrReference order by a.GtrReference) as RN,
    --concat(d.TransfCompYear, case when len(d.TransfCompPeriod) = 1 then '0' end, d.TransfCompPeriod) as DateCompleted,
    a.Complete,
    d.Line,
  d.TransfCompPeriod as DateMonth,
  d.TransfCompYear as DateYear,
  a.GtrReference as GtrReference,
  a.SourceWarehouse as SourceWarehouse, 
  max(a.TargetWarehouse) over (partition by a.GtrReference) as TargetWarehouse, 
  a.DateCreated as DateCreated,
  COALESCE(d.ExpectedDueDate, d.ExpectedDueDate) as ExpectedDueDate,
  a.EntryType as EntryType, 
  a.ControlAccount as ControlAccount, 
  max(a.InitialValue) over (partition by a.GtrReference) as InitialValue,
  a.Operator as Operator,
  b.Description as FirstDesc, 
  c.Description as SecondDesc,
  e.TransactionTyp as Movement,
  e.TransactionDate as DateCompleted
FROM 
    [GtrMaster] a  
    LEFT JOIN [InvWhControl] b  
     ON (a.SourceWarehouse = b.Warehouse) 
    LEFT JOIN [InvWhControl] c  
     ON (a.TargetWarehouse = c.Warehouse) 
    LEFT JOIN [GtrDetail] d  
     ON (a.GtrReference = d.GtrReference) 
    LEFT JOIN [GtrTransactions] e
     ON (a.GtrReference = e.GtrReference) 
    WHERE ( a.EntryType = 'W' OR a.EntryType = 'S' ) 
     AND a.Complete = 'Y' AND a.GtrReference <> '' 
     --and i.Line = '1'
     and e.TransactionDate >= DATEADD(hh,0,dateadd(DAY, datediff(day, +90, getdate()),0))
     --and InitialValue = '4732.53'
     and e.TransactionTyp = 'I'
    ORDER BY e.TransactionDate desc

What am i doing wrong in my main query?