Batch script to delete duplicate lines but wanted to ignore/skip some lines

Question

Is it also possible to ignore some duplicate lines while removing other duplicates from an xml file, example: if my abx.xml is CODE:

@echo off
setlocal disableDelayedExpansion
set "file=%~1"
set "line=%file%.line"
set "deduped=%file%.deduped"
::Define a variable containing a linefeed character
set LF=^


::The 2 blank lines above are critical, do not remove
>"%deduped%" (
  for /f usebackq^ eol^=^%LF%%LF%^ delims^= %%A in ("%file%") do (
    set "ln=%%A"
    setlocal enableDelayedExpansion
    >"%line%" (echo !ln:\=\\!)
    >nul findstr /xlg:"%line%" "%deduped%" || (echo !ln!)
    endlocal
  )
)
>nul move /y "%deduped%" "%file%"
2>nul del "%line%"

Only BATCH SCRIPT PLEASE.

<bookstores>
   <book id="parent">
      <name="it1"/>
      <name="it1"/>
      <name="it2"/>
   </book>
   <book id="child">
      <name="it1"/>
      <name="it1"/>
      <name="it2"/>
      <name="it3"/>
   </book>     
</bookstores>

Output should be:

<bookstores>
   <book id="parent">
      <name="it1"/>
      <name="it2"/>
   </book>
   <book id="child">
      <name="it3"/>
   </book>     
</bookstores>

But the output i am getting is: NOTE: </book> tag is removed.

<bookstores>
   <book id="parent">
      <name="it1"/>
      <name="it2"/>
   </book>
   <book id="child">
      <name="it3"/>

</bookstores>

I have searched couple of simillar requests but most of them are deleting all duplicate lines,but not sure how to ignore some duplicate lines:

Batch to remove duplicate rows from text file

Answer 1

This might work for you, if you put lines always to print in the %dict% file:

@ECHO OFF &SETLOCAL ENABLEDELAYEDEXPANSION
SET "file=file"
SET "new=new"
SET "dict=dictionary"

(FOR /f "tokens=1*delims=:" %%a IN ('findstr /n "^" "%file%"') DO (
    SET "nr=%%a"
    SET "line=%%b"
    SET "this="
    FINDSTR /l "!line!" "%dict%" >NUL 2>&1&& ECHO(!line! || (
        FOR /f "tokens=1*delims==" %%x IN ('set "$" 2^>nul') DO IF !line!==%%y SET "this=1"
        IF "!this!"=="" (
            ECHO(!line!
            SET "$!nr!=!line!"
        )
    )
))>"%new%"
TYPE "%new%"

..shell session:

    >type file
    <bookstores>
       <book id="parent">
          <name="it1"/>
          <name="it1"/>
          <name="it2"/>
       </book>
       <book id="child">
          <name="it1"/>
          <name="it1"/>
          <name="it2"/>
          <name="it3"/>
       </book>
    </bookstores>

    >type dictionary
    </book>

    >script.bat
    <bookstores>
       <book id="parent">
          <name="it1"/>
          <name="it2"/>
       </book>
       <book id="child">
          <name="it3"/>
       </book>
    </bookstores>